{"action":"Upgrade symfony/mime to 5.4.52 or later.","affected":[{"fixed":"5.4.52","introduced":"0"},{"fixed":"6.4.40","introduced":"6.0.0"},{"fixed":"7.4.12","introduced":"7.0.0"},{"fixed":"8.0.12","introduced":"8.0.0"}],"component":"symfony/mime","cve_ids":["CVE-2026-45070"],"ecosystem":"Packagist","epss":0.0039,"exploited":false,"fixed_versions":["5.4.52","6.4.40","7.4.12","8.0.12"],"ghsa_id":"GHSA-vqc8-7275-q272","id":"tcs_01M5KF9BZYRE4S6N45NJA5STJF","modified_at":"2026-09-10T03:51:07.338405238Z","published_at":"2026-05-27T21:09:12Z","references":["https://osv.dev/vulnerability/GHSA-vqc8-7275-q272","https://github.com/symfony/symfony/security/advisories/GHSA-vqc8-7275-q272","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mime/CVE-2026-45070.yaml","https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2026-45070.yaml","https://github.com/symfony/symfony","https://symfony.com/cve-2026-45070"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-vqc8-7275-q272","url":"https://osv.dev/vulnerability/GHSA-vqc8-7275-q272"},{"source":"nvd","source_id":"CVE-2026-45070","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45070"}],"summary":"Symfony has Email Header Injection via Non-Token Characters in Mime Parameter Names"}