Phalcon is a high-performance, full-stack PHP framework. Prior to 5.15.0, every Phalcon MVC application built with a default router registers a built-in route whose compiled PCRE pattern contains the nested quantifier (/.), and the same construct is produced by the /:params placeholder and the CLI router. Phalcon\Mvc\Router::handle() matches this pattern against the attacker-controlled request URI on every request, so a crafted path such as one containing repeated slashes followed by decoded newlines can trigger catastrophic backtracking and cause CPU exhaustion or route-matching failure. This issue is fixed in version 5.15.0.
Fix
Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.
Change history 1
- First seenCVSS 8.7NVD modified 2026-10-25 15:10
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 5
- https://github.com/phalcon/cphalcon/commit/14ba22d389d5ca620bb9d5207205f836ef1224f2
- https://github.com/phalcon/cphalcon/commit/fa798e919cb2c487062bb9899ad6fc2b673b3a67
- https://github.com/phalcon/cphalcon/releases/tag/v5.15.0
- https://github.com/phalcon/cphalcon/security/advisories/GHSA-x7rj-f32v-7jjg
- https://github.com/phalcon/cphalcon/security/advisories/GHSA-x7rj-f32v-7jjg