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CVE-2026-45072GHSA-HMR5-2XCR-V8PP

Symfony: Stored XSS in WebProfiler CodeExtension::fileExcerpt() — Unescaped Non-PHP File Rendering

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.4.40, 7.4.12, 8.0.12
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.4.24 until 6.4.40, 7.4.12, and 8.0.12, the development profiler file_excerpt Twig filter escapes PHP files through highlight_string() but interpolates lines from non-PHP files directly into <code> elements, allowing stored XSS against a developer who opens an attacker-written file such as var/log/dev.log in the profiler. This issue is fixed in versions 6.4.40, 7.4.12, and 8.0.12.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • symfony symfony

    From 6.4.24 · fixed in 6.4.40; From 7.2.9 · fixed in 7.4.12; From 8.0.0-BETA1 · fixed in 8.0.12

  • symfony twig-bridge

    From 6.4.24 · fixed in 6.4.40

  • symfony web-profiler-bundle

    From 7.2.9 · fixed in 7.4.12; From 8.0.0-BETA1 · fixed in 8.0.12

  • symfony/symfonyPackagist

    From 6.4.24 · fixed in 6.4.40

  • symfony/symfonyPackagist

    From 7.2.9 · fixed in 7.4.12

  • symfony/symfonyPackagist

    From 8.0.0 · fixed in 8.0.12

  • symfony/twig-bridgePackagist

    From 6.4.24 · fixed in 6.4.40

  • symfony/web-profiler-bundlePackagist

    From 7.2.9 · fixed in 7.4.12

  • symfony/web-profiler-bundlePackagist

    From 8.0.0 · fixed in 8.0.12

References 5

GitHub · symfony/symfony