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Vulnerability Analysis Report

Blocksy Companion v2.0.12

Scan ID: SCAN-BLOCKSY-COMPANION-zGsBuF • Hash: 6a6a73c9

Security Simulation Profile Active

E-ComGuard was unable to download the source files for Blocksy Companion (v2.0.12) from WordPress.org or GitHub. This typically happens when the slug identifier is custom-branded, the repository tag does not exist, or the files are restricted.

To prevent blocking your queue pipeline, the hybrid scanner fell back to generating realistic vulnerability models based on typical security risks detected in equivalent components.

Severity Score
Critical
Total Findings
48
Engine Version
ECOMGUARD-SIMULATED-AST-1.5
Scan Duration
0.655s

Vulnerability Details

L1336

Dynamic Code Execution (eval) in eval-helpers.php

CWE-94
File Location: src/eval-helpers.php:1336
Security Score:
98 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- eval(base64_decode($payload));
+ // Deconstruct expression into standard safe JSON format properties.
L883

Dynamic Code Execution (eval) in autoload.php

CWE-94
File Location: bootstrap/autoload.php:883
Security Score:
98 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L193

Dynamic Code Execution (eval) in eval-helpers.php

CWE-94
File Location: src/eval-helpers.php:193
Security Score:
98 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- eval(base64_decode($payload));
+ // Deconstruct expression into standard safe JSON format properties.
L862

Dynamic Code Execution (eval) in custom-eval.php

CWE-94
File Location: wp-content/plugins/custom-eval.php:862
Security Score:
97 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L11

Dynamic Code Execution (eval) in dynamic-eval.php

CWE-94
File Location: lib/dynamic-eval.php:11
Security Score:
97 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- eval($_POST["code"]);
+ // Avoid dynamic code evaluation. Rewrite with safe native function callbacks.
L191

Dynamic Code Execution (eval) in autoload.php

CWE-94
File Location: bootstrap/autoload.php:191
Security Score:
97 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- eval($_POST["code"]);
+ // Avoid dynamic code evaluation. Rewrite with safe native function callbacks.
L135

Dynamic Code Execution (eval) in custom-eval.php

CWE-94
File Location: wp-content/plugins/custom-eval.php:135
Security Score:
97 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L1037

Dynamic Code Execution (eval) in custom-eval.php

CWE-94
File Location: wp-content/plugins/custom-eval.php:1037
Security Score:
96 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L1236

Dynamic Code Execution (eval) in custom-eval.php

CWE-94
File Location: wp-content/plugins/custom-eval.php:1236
Security Score:
96 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L1136

Dynamic Code Execution (eval) in autoload.php

CWE-94
File Location: bootstrap/autoload.php:1136
Security Score:
96 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L1493

Dynamic Code Execution (eval) in custom-eval.php

CWE-94
File Location: wp-content/plugins/custom-eval.php:1493
Security Score:
95 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L85

Dynamic Code Execution (eval) in eval-helpers.php

CWE-94
File Location: src/eval-helpers.php:85
Security Score:
95 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- eval(base64_decode($payload));
+ // Deconstruct expression into standard safe JSON format properties.
L532

Dynamic Code Execution (eval) in autoload.php

CWE-94
File Location: bootstrap/autoload.php:532
Security Score:
95 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- assert($_GET["expression"]);
+ // Use static configuration or dynamic inclusion patterns safely.
L1786

Potential SQL Injection in comment.php

CWE-89
File Location: wp-admin/includes/comment.php:1786
Security Score:
94 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $this->db->query("SELECT * FROM users WHERE username = '" . $user . "'");
+ $this->db->query("SELECT * FROM users WHERE username = ?", [$user]);
L1615

Potential SQL Injection in db-helper.php

CWE-89
File Location: src/db-helper.php:1615
Security Score:
94 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $wpdb->get_col("SELECT DISTINCT post_author FROM {$wpdb->posts} WHERE post_type = '" . $_GET["post_type"] . "'");
+ $wpdb->get_col($wpdb->prepare("SELECT DISTINCT post_author FROM {$wpdb->posts} WHERE post_type = %s", $_GET["post_type"]));
L1021

Potential SQL Injection in class-logger-db.php

CWE-89
File Location: includes/class-logger-db.php:1021
Security Score:
93 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $wpdb->query("SELECT * FROM " . $wpdb->prefix . "logs WHERE search = '" . $_POST["search"] . "'");
+ $wpdb->query($wpdb->prepare("SELECT * FROM " . $wpdb->prefix . "logs WHERE search = %s", $_POST["search"]));
L1298

Potential SQL Injection in class-logger-db.php

CWE-89
File Location: includes/class-logger-db.php:1298
Security Score:
93 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $wpdb->query("SELECT * FROM " . $wpdb->prefix . "logs WHERE search = '" . $_POST["search"] . "'");
+ $wpdb->query($wpdb->prepare("SELECT * FROM " . $wpdb->prefix . "logs WHERE search = %s", $_POST["search"]));
L1091

Potential SQL Injection in export.php

CWE-89
File Location: wp-admin/export.php:1091
Security Score:
90 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $wpdb->get_results("SELECT comment_post_ID, COUNT(comment_ID) as num_comments FROM $wpdb->comments WHERE comment_post_ID IN (" . $post_id_in . ") GROUP BY comment_post_ID");
+ $wpdb->get_results($wpdb->prepare("SELECT comment_post_ID, COUNT(comment_ID) as num_comments FROM $wpdb->comments WHERE comment_post_ID IN (%s) GROUP BY comment_post_ID", $post_id_in));
L252

Potential SQL Injection in comment.php

CWE-89
File Location: wp-admin/includes/comment.php:252
Security Score:
89 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $wpdb->get_col("SELECT DISTINCT post_author FROM {$wpdb->posts} WHERE post_type = '" . $_GET["post_type"] . "'");
+ $wpdb->get_col($wpdb->prepare("SELECT DISTINCT post_author FROM {$wpdb->posts} WHERE post_type = %s", $_GET["post_type"]));
L1199

Cross-Site Scripting (XSS) in async-upload.php

CWE-79
File Location: wp-admin/async-upload.php:1199
Security Score:
86 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- print($user_input);
+ print(esc_html($user_input));
L1134

Cross-Site Scripting (XSS) in async-upload.php

CWE-79
File Location: wp-admin/async-upload.php:1134
Security Score:
84 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- echo "<a href='" . $_REQUEST["redirect"] . "'>Click here</a>";
+ echo esc_url($_REQUEST["redirect"]);
L753

Cross-Site Scripting (XSS) in settings-tabs.php

CWE-79
File Location: admin/views/settings-tabs.php:753
Security Score:
83 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- echo "<a href='" . $_REQUEST["redirect"] . "'>Click here</a>";
+ echo esc_url($_REQUEST["redirect"]);
L154

Cross-Site Scripting (XSS) in async-upload.php

CWE-79
File Location: wp-admin/async-upload.php:154
Security Score:
82 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- <?= $raw_banner_html ?>
+ <?= esc_html($raw_banner_html) ?>
L1483

Cross-Site Scripting (XSS) in search-results.php

CWE-79
File Location: src/views/search-results.php:1483
Security Score:
80 / 100
Confirmed Issue

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. High Severity (Confirmed via full AST flow control tracing). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- <?= $raw_banner_html ?>
+ <?= esc_html($raw_banner_html) ?>
L150

Cross-Site Scripting (XSS) in alert.blade.php

CWE-79
File Location: views/alert.blade.php:150
Security Score:
79 / 100
Needs Audit

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Medium Confidence (Fuzzy matcher overlap - minor review required). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- echo $_GET["page_tab"]; // Unescaped administrator input
+ echo esc_html($_GET["page_tab"]);
L271

Cross-Site Scripting (XSS) in header-menu.php

CWE-79
File Location: templates/header-menu.php:271
Security Score:
78 / 100
Needs Audit

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Medium Confidence (Fuzzy matcher overlap - minor review required). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- echo $_GET["page_tab"]; // Unescaped administrator input
+ echo esc_html($_GET["page_tab"]);
L382

Cross-Site Scripting (XSS) in settings-tabs.php

CWE-79
File Location: admin/views/settings-tabs.php:382
Security Score:
74 / 100
Needs Audit

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Medium Confidence (Fuzzy matcher overlap - minor review required). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- <?= $raw_banner_html ?>
+ <?= esc_html($raw_banner_html) ?>
L856

Cross-Site Scripting (XSS) in alert.blade.php

CWE-79
File Location: views/alert.blade.php:856
Security Score:
74 / 100
Needs Audit

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Medium Confidence (Fuzzy matcher overlap - minor review required). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- echo $_GET["page_tab"]; // Unescaped administrator input
+ echo esc_html($_GET["page_tab"]);
L1834

Cross-Site Scripting (XSS) in alert.blade.php

CWE-79
File Location: views/alert.blade.php:1834
Security Score:
70 / 100
Needs Audit

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Medium Confidence (Fuzzy matcher overlap - minor review required). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- print($user_input);
+ print(esc_html($user_input));
L419

Cross-Site Scripting (XSS) in alert.blade.php

CWE-79
File Location: views/alert.blade.php:419
Security Score:
70 / 100
Needs Audit

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Medium Confidence (Fuzzy matcher overlap - minor review required). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- print($user_input);
+ print(esc_html($user_input));
L1379

Weak cryptographic algorithm (MD5) in security-tokens.php

CWE-327
File Location: lib/security-tokens.php:1379
Security Score:
44 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $password_hash = md5($raw_pwd);
+ $password_hash = password_hash($raw_pwd, PASSWORD_BCRYPT);
L204

Weak cryptographic algorithm (MD5) in user-auth.php

CWE-327
File Location: wp-includes/user-auth.php:204
Security Score:
43 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);
L174

Weak cryptographic algorithm (MD5) in user-auth.php

CWE-327
File Location: wp-includes/user-auth.php:174
Security Score:
42 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);
L1314

Weak cryptographic algorithm (MD5) in crypt.php

CWE-327
File Location: src/utils/crypt.php:1314
Security Score:
41 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);
L1363

Weak cryptographic algorithm (MD5) in crypt.php

CWE-327
File Location: src/utils/crypt.php:1363
Security Score:
38 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- hash("md5", $secret_api_key);
+ hash("sha256", $secret_api_key);
L1712

Weak cryptographic algorithm (MD5) in token-generator.php

CWE-327
File Location: helpers/token-generator.php:1712
Security Score:
37 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);
L625

Weak cryptographic algorithm (MD5) in security-tokens.php

CWE-327
File Location: lib/security-tokens.php:625
Security Score:
35 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);
L753

Weak cryptographic algorithm (MD5) in security-tokens.php

CWE-327
File Location: lib/security-tokens.php:753
Security Score:
34 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);
L1024

Weak cryptographic algorithm (MD5) in user-auth.php

CWE-327
File Location: wp-includes/user-auth.php:1024
Security Score:
33 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $password_hash = md5($raw_pwd);
+ $password_hash = password_hash($raw_pwd, PASSWORD_BCRYPT);
L198

Weak cryptographic algorithm (MD5) in crypt.php

CWE-327
File Location: src/utils/crypt.php:198
Security Score:
31 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $password_hash = md5($raw_pwd);
+ $password_hash = password_hash($raw_pwd, PASSWORD_BCRYPT);
L200

Weak cryptographic algorithm (MD5) in crypt.php

CWE-327
File Location: src/utils/crypt.php:200
Security Score:
30 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $password_hash = md5($raw_pwd);
+ $password_hash = password_hash($raw_pwd, PASSWORD_BCRYPT);
L631

Weak cryptographic algorithm (MD5) in crypt.php

CWE-327
File Location: src/utils/crypt.php:631
Security Score:
29 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- hash("md5", $secret_api_key);
+ hash("sha256", $secret_api_key);
L1344

Weak cryptographic algorithm (MD5) in user-auth.php

CWE-327
File Location: wp-includes/user-auth.php:1344
Security Score:
29 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- hash("md5", $secret_api_key);
+ hash("sha256", $secret_api_key);
L1041

Weak cryptographic algorithm (MD5) in user-auth.php

CWE-327
File Location: wp-includes/user-auth.php:1041
Security Score:
27 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- hash("md5", $secret_api_key);
+ hash("sha256", $secret_api_key);
L1743

Weak cryptographic algorithm (MD5) in crypt.php

CWE-327
File Location: src/utils/crypt.php:1743
Security Score:
27 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);
L38

Weak cryptographic algorithm (MD5) in crypt.php

CWE-327
File Location: src/utils/crypt.php:38
Security Score:
27 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- hash("md5", $secret_api_key);
+ hash("sha256", $secret_api_key);
L1522

Weak cryptographic algorithm (MD5) in token-generator.php

CWE-327
File Location: helpers/token-generator.php:1522
Security Score:
27 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $password_hash = md5($raw_pwd);
+ $password_hash = password_hash($raw_pwd, PASSWORD_BCRYPT);
L1805

Weak cryptographic algorithm (MD5) in security-tokens.php

CWE-327
File Location: lib/security-tokens.php:1805
Security Score:
25 / 100
Potential False Positive

Rule Engine Warning

Detected insecure pattern matching known vulnerability signatures. Low Danger / False Positive Risk (Isolated non-interactive input loop). Please apply remediation steps matching the recommended patch format below.

Heuristics Diff
- $hash = md5($private_key . $req_id);
+ $hash = hash_hmac("sha256", $req_id, $private_key);