{"id":"CVE-2026-0859","aliases":["GHSA-7vp9-x248-9vr9"],"url":"https://o3.security/vulnerability/CVE-2026-0859","summary":"TYPO3 CMS Allows Insecure Deserialization via Mailer File Spool","details":"TYPO3's mail‑file spool deserialization flaw lets local users with write access to the spool directory craft a malicious file that is deserialized during the mailer:spool:send command, enabling arbitrary PHP code execution on the web server. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.","published":"2026-01-13T11:54:11.494Z","modified":"2026-08-27T03:30:47.352855785Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"14.0.2"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"13.4.23"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"12.4.41"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"11.5.49"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"10.4.55"}],"fix":{"url":"https://github.com/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f","label":"TYPO3/typo3@3225d70"},"references":[{"type":"WEB","url":"https://packagist.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0859.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0859"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2026-004"},{"type":"FIX","url":"https://github.com/TYPO3/typo3/commit/3225d705080a1bde57a66689621c947da5a4782f"},{"type":"FIX","url":"https://github.com/TYPO3/typo3/commit/722bf71c118b0a8e4f2c2494854437d846799a13"},{"type":"FIX","url":"https://github.com/TYPO3/typo3/commit/e0f0ceee480c203fbb60b87454f5f193e541d27f"},{"type":"PACKAGE","url":"https://github.com/TYPO3/typo3"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T03:30:47.352855785Z"}}