{"action":"Upgrade symfony to 7.4.23+dfsg-1 or later.","affected":[{"fixed":"7.4.23+dfsg-1","introduced":"0"}],"component":"symfony","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["7.4.23+dfsg-1"],"id":"tcs_01M6RTMCMHR41343DHWKW9Z58J","modified_at":"2026-11-07T09:47:33.791596264Z","published_at":"2026-11-05T18:17:07.480Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-121949","https://security-tracker.debian.org/tracker/CVE-2026-121949"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-121949#Debian:14/symfony","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-121949"}],"summary":"The Symfony HtmlSanitizer component does not apply the media URL policy to the srcset and imagesrcset attributes, allowing values that point to hosts or schemes not permitted by allowMediaSchemes() or"}