Symfony Yaml vulnerabilities

2 vulnerabilities

Known vulnerabilities in Symfony Yaml, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

8.7CVE-2026-45305chainguardzabbix-web-nginx-pgsql-fips-6.0+6
EPSS score
0.68%
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 8.0.12.8.7CVE-2026-45304chainguardzabbix-web-nginx-pgsql-fips-6.0+6
EPSS score
0.68%
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 resolved YAML collection aliases recursively, allowing a small untrusted YAML input to expand into a multi-gigabyte structure and exhaust memory. This issue is fixed in versions 5.4.52, 6.4.40, 7.4.12, and 8.0.12.