{"id":"CVE-2026-49740","aliases":["GHSA-c78m-c52x-jgwp"],"url":"https://o3.security/vulnerability/CVE-2026-49740","summary":"TYPO3 CMS - Insecure Deserialization in Core API","details":"TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects. Exploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.","published":"2026-06-09T10:53:55.777Z","modified":"2026-08-12T03:51:44.350902199Z","cvss":null,"epss":{"score":0.00215,"percentile":0.11804,"asOf":"2026-09-01"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"10.4.57"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"11.5.51"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"12.4.46"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"13.4.31"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"14.3.3"}],"fix":{"url":"https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7","label":"TYPO3/typo3@48bcf24"},"references":[{"type":"WEB","url":"https://packagist.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49740.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49740"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2026-018"},{"type":"FIX","url":"https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7"},{"type":"FIX","url":"https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02"},{"type":"PACKAGE","url":"https://github.com/TYPO3/typo3"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:44.350902199Z"}}