
Solved Intigriti CTF via Unintended PathI successfully bypassed and solved one of Intigriti's Monthly Web Security CTF challenges. My approach stood out because I discovered an "Unintended Solution," finding an alternative logical path to exploit the flaw that the challenge creators hadn't anticipated. The submission was officially reviewed and accepted (Status: Accepted) by the Intigriti triage team (ayoub__intigriti), who highly commended the methodology. They invited me to document the finding to help other security researchers learn from this unique attack vector. I have published a detailed technical write-up breaking down the exact execution, methodology, and how the unintended logic flaw was chained to capture the flag.

Critical CSRF in Images Sync Cloudflare PluginDiscovered a Critical Cross-Site Request Forgery (CSRF) vulnerability in Images Sync for Cloudflare WordPress plugin version 1.0.7. This high-severity vulnerability (CVSS Score: 8.8) allows remote unauthenticated attackers to compromise WordPress administrator accounts. [Vulnerability Details] - Type: Cross-Site Request Forgery (CSRF) - Severity: HIGH (CVSS v3.1: 8.8) - CWE: CWE-352 - Attack Vector: Network / Remote - Requires User Interaction: Yes (Admin must visit malicious page) [Technical Description] The plugin fails to implement proper nonce verification in the SettingsPage.php handler. A remote attacker can craft a malicious HTML page that, when visited by a logged-in WordPress administrator, automatically submits a forged POST request to change the Cloudflare API Token and Account ID without authorization. [Exploitation Scenario] An attacker hosts a malicious webpage containing hidden form elements. When a WordPress administrator (who is logged into their WordPress dashboard) visits this page, the form auto-submits in the background, overwriting the Cloudflare credentials without the user's knowledge. [Impact] - Unauthorized modification of Cloudflare API credentials - Complete takeover of image synchronization service - Data redirection to attacker-controlled infrastructure - Privilege Escalation [Affected Component] - SettingsRepo.php - src/Support/TokenStorage.php [Timeline] - Vulnerability Discovered: March 2026 - Vendor Notified: 2026-03-08 via [email protected] - Vendor Response: No response received - Public Disclosure: Ready for assignment [Proof of Concept] Available - demonstrates successful remote exploitation without user interaction beyond visiting a malicious page. [References] - https://wordpress.org/plugins/images-sync-for-cloudflare/ - https://www.spintax.net [Discoverer] AMMAR-OS ([email protected])