symfony: Symfony is a PHP framework for web and console applications and a set of reusable PHP components
CVE-2026-45305 is fixed in symfony on 1 platform, first by DEBIAN-CVE-2026-45305, released May 27, 2026. It is not reported as exploited. Patch Radar priority: High.
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Prior to 5.4.52, 6.4.40, 7.4.12, and 8.0.12, Symfony\Component\Yaml\Parser::cleanup() used regular expressions with overlapping quantifiers for YAML directive, comment, and document marker cleanup, allowing crafted input to make parsing hang for an arbitrarily long time. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| symfony · Debian 12.15 (bookworm) | 5.4.53+dfsg-0+deb12u1 | DEBIAN-CVE-2026-45305 | May 27, 2026 |
| symfony · Debian 13.5 (trixie) | 6.4.41+dfsg-0+deb13u1 | DEBIAN-CVE-2026-45305 | May 27, 2026 |
| symfony · Debian 14 | 7.4.12+dfsg-1 | DEBIAN-CVE-2026-45305 | May 27, 2026 |
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