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OpenAdvisories
Low · 2.0 CVE-2026-45072 EUVD-2026-44366GHSA-hmr5-2xcr-v8pp

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

Published Jul 14, 2026 · Updated Jul 15, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
symfony symfony >= 6.4.24, < 6.4.40, >= 7.2.9, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12 —
symfony twig-bridge >= 6.4.24, < 6.4.40 —
symfony web-profiler-bundle >= 7.2.9, < 7.4.12, >= 8.0.0-BETA1, < 8.0.12 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 symfony 7.4.12+dfsg-1 —
Debian 13 symfony 6.4.41+dfsg-0+deb13u1 —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 symfony No fix yet —
Ubuntu 26.04 LTS symfony No fix yet —
Ubuntu 25.10 symfony No fix yet —
Ubuntu 16.04 LTS symfony No fix yet —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 24.04 LTS symfony No fix yet —
Ubuntu Pro 22.04 LTS symfony No fix yet —
Ubuntu Pro 20.04 LTS symfony No fix yet —
Ubuntu Pro 18.04 LTS symfony No fix yet —

Affected packages

EcosystemPackageAffectedFixedRecord
Packagist symfony/symfony >= 6.4.24, < 6.4.40 6.4.40 GHSA-hmr5-2xcr-v8pp
Packagist symfony/symfony >= 7.2.9, < 7.4.12 7.4.12 GHSA-hmr5-2xcr-v8pp
Packagist symfony/symfony >= 8.0.0, < 8.0.12 8.0.12 GHSA-hmr5-2xcr-v8pp
Packagist symfony/twig-bridge >= 6.4.24, < 6.4.40 6.4.40 GHSA-hmr5-2xcr-v8pp
Packagist symfony/web-profiler-bundle >= 7.2.9, < 7.4.12 7.4.12 GHSA-hmr5-2xcr-v8pp
Packagist symfony/web-profiler-bundle >= 8.0.0, < 8.0.12 8.0.12 GHSA-hmr5-2xcr-v8pp

References