AIKIDO-2026-10865
symfony/twig-bridge is vulnerable to Cross-site Scripting (XSS)
39
Low Risk
This Affects:
symfony/twig-bridgeTL;DR
CodeExtension::fileExcerpt() escapes PHP files through syntax highlighting but renders non-PHP file lines without escaping. If attacker-controlled content is written to a file later viewed through a profiler excerpt, it can execute as HTML or JavaScript. Pre-fix development profiler views can expose stored XSS to developers. The fix escapes non-PHP file contents before rendering excerpts.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
symfony/twig-bridge is vulnerable to Cross-site Scripting (XSS) in versions 6.4.24 - 6.4.39.
How to fix this
Upgrade the symfony/twig-bridge and/or symfony/symfony library to the patch version.
Links
GitHub Releases
github.com/symfony/twig-bridge/releases/tag/v6.4.40github.com/symfony/symfony/releases/tag/v6.4.40github.com/symfony/symfony/releases/tag/v7.4.12github.com/symfony/symfony/releases/tag/v8.0.12
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