OWASP Core Rule Set (CRS) v4.25.0 Vulnerability Fix Summary Vulnerability Overview This update primarily addresses multiple file upload detection bypass vulnerabilities, specifically targeting whitespace padding bypass attack techniques. Key fixes include: PHP Double-Encoding Upload Bypass: Patched vulnerability allowing whitespace padding to bypass PHP double-encoding upload detection (fix#393111). PHP File Upload Detection Bypass: Patched vulnerability enabling whitespace padding to bypass PHP file upload detection (fix#393112). ZPP File Upload Detection Bypass: Patched vulnerabilities allowing whitespace padding to bypass ZPP file upload detection (fix#4540, fix#393140, fix#393141). AI-Based Patch Expansion: Enhanced AI-driven patch detection capabilities (fix#39130). Affected Scope Software Version: OWASP Core Rule Set (CRS) versions prior to v4.25.0. Affected Components: File upload detection rules, particularly those related to PHP and ZPP format file uploads. Remediation Upgrade Recommendation: Upgrade to v4.25.0 (LTS) or a higher version. Related Fix Commits: #4547, #4548, #4549, #4552, #4553, #4554, etc. POC/Exploit Code No specific POC code or exploit scripts are provided in the release notes.