{"action":"Upgrade symfony/symfony to 7.4.12 or later.","affected":[{"fixed":"7.4.12","introduced":"7.1.0"},{"fixed":"8.0.12","introduced":"8.0.0"}],"component":"symfony/symfony","cve_ids":["CVE-2026-45074"],"ecosystem":"Packagist","epss":0.00488,"exploited":false,"fixed_versions":["7.4.12","8.0.12"],"ghsa_id":"GHSA-j8gj-9rm5-4xhx","id":"tcs_01M5KF4D4MCGVJZVDN1HVBVNXX","modified_at":"2026-09-10T03:50:47.154449481Z","published_at":"2026-05-27T21:11:59Z","references":["https://osv.dev/vulnerability/GHSA-j8gj-9rm5-4xhx","https://github.com/symfony/symfony/security/advisories/GHSA-j8gj-9rm5-4xhx","https://github.com/symfony/symfony/commit/5ba145dba702404801bdf9e7e8d6df170060d541","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2026-45074.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45074.yaml","https://github.com/symfony/symfony","https://symfony.com/cve-2026-45074"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-j8gj-9rm5-4xhx#Packagist/symfony/symfony","url":"https://osv.dev/vulnerability/GHSA-j8gj-9rm5-4xhx"}],"summary":"Symfony's Cas2Handler Derives CAS service URL from Client Host Header → Cross-Service Ticket Replay"}