CVE-2026-45305
LOW SEVERITYVulnerability Description
Symfony's YAML Parser has a ReDoS via Catastrophic Backtracking in Parser::cleanup() Regex
Vulnerability Details
Published Date
Last Modified
Source
GitHub
Vendor
composer
Product
symfony/yaml
External References
- https://github.com/symfony/symfony/security/advisories/GHSA-9frc-8383-795m
- https://github.com/symfony/symfony/commit/9749cd43c5e09b3735093623670b21b9d8a056cb
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45305.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/yaml/CVE-2026-45305.yaml
- https://symfony.com/cve-2026-45305
- https://github.com/advisories/GHSA-9frc-8383-795m
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