---
id: CVE-2026-57584
title: 'Phalcon is a high-performance, full-stack PHP framework'
summary: >-
  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 …
severity: none
cwe:
  - CWE-1333
published: '2026-07-10'
updated: '2026-07-10'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-57584'
references:
  - url: >-
      https://github.com/phalcon/cphalcon/commit/14ba22d389d5ca620bb9d5207205f836ef1224f2
    label: security-advisories@github.com
  - url: >-
      https://github.com/phalcon/cphalcon/commit/fa798e919cb2c487062bb9899ad6fc2b673b3a67
    label: security-advisories@github.com
  - url: 'https://github.com/phalcon/cphalcon/releases/tag/v5.15.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/phalcon/cphalcon/security/advisories/GHSA-x7rj-f32v-7jjg
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00524
epssPercentile: 0.41993
ingestedAt: '2026-07-11T22:16:00.708Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.