CVE-2026-45066

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. From 6.1.0-BETA1 until 6.4.40, 7.4.12, and 8.0.12, HtmlSanitizer URL sanitization can allow off-allowlist URLs through allowLinkHosts or allowMediaHosts because UrlSanitizer::parse follows RFC 3986...

GHSA-QC95-4862-92FH Symfony has an HtmlSanitizer allowLinkHosts() / allowMediaHosts() Bypass via URL-Parser Differentials and <area> Misclassification

Description symfony/html-sanitizer lets applications sanitise untrusted HTML. The configuration methods allowLinkHosts... and allowLinkSchemes... are intended to restrict targets to an allowlist of hosts/schemes; allowMediaHosts / allowMediaSchemes do the same for etc. Three distinct bypasses all...

PT-2026-44135

Name of the Vulnerable Software and Affected Versions symfony/html-sanitizer versions prior to 5.4 Description Three bypasses allow content authors to smuggle URLs that are not on the allowlist past sanitization checks. The first bypass occurs because UrlSanitizer::parse follows RFC-3986, whereas...

CVE-2022-24974

Links may not be rewritten according to policy in some specially formatted emails...