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symfony/twig-bridge

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

Open advisories

2 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. Low, CVSS 1.2PackagistPublished

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

    CVE-2026-45072 · GHSA-hmr5-2xcr-v8pp

    Affected
    • Packagist symfony/twig-bridge >= 6.4.24, < 6.4.40
    Fixed in
    6.4.40· Vendor fix available
    Issue
    Symfony's profiler, a development only debug UI, renders source-code excerpts on several pages using Twig's custom fileexcerpt filter. This filter renders PHP files via highlightstring() (which escapes HTML), but renders non-PHP files by splitting on \n and interpolating each line directly into <code{$line}</code with no escaping. An attacker who can write arbitrary bytes into any file under the project root (including e.g. var/log/dev.log), achieves stored XSS against any developer who later opens that file in the profiler. Resolution The fileexcerpt filter now properly escapes each line of non-PHP files using htmlspecialchars() before concatenating them. The patch for this issue is available here for branch 6.4. Credits Symfony would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue and providing the fix.

    Recommended action: Upgrade to 6.4.40 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →
  2. Medium, CVSS 6.1PackagistPublished

    Symfony potential Cross-site Scripting vulnerabilities in CodeExtension filters

    CVE-2023-46734 · GHSA-q847-2q57-wmr3

    Affected
    • Packagist symfony/twig-bridge >= 2.0.0, < 4.4.51; >= 5.0.0, < 5.4.31; >= 6.0.0, < 6.3.8
    Fixed in
    6.3.85.4.314.4.51· Vendor fix available
    Issue
    Some Twig filters in CodeExtension use "issafe=html" but don't actually ensure their input is safe. Resolution Symfony now escapes the output of the affected filters. The patch for this issue is available here for branch 4.4. Credits We would like to thank Pierre Rudloff for reporting the issue and to Nicolas Grekas for providing the fix.

    Recommended action: Upgrade to 6.3.8, 5.4.31 or 4.4.51 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →