{"id":"CVE-2026-49740","state":"PUBLISHED","title":"TYPO3 CMS - Insecure Deserialization in Core API","description":"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.","publishedAt":"2026-06-09T10:53:55.777Z","updatedAt":"2026-07-15T12:49:15.005Z","severity":{"score":6.3,"label":"Medium","version":"4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H","source":"TYPO3"},"assigner":"TYPO3","products":["TYPO3 TYPO3 CMS"],"affected":[{"vendor":"TYPO3","product":"TYPO3 CMS","packageName":"typo3/cms-core","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"10.4.57","versionType":"semver"},{"version":"11.0.0","status":"affected","lessThan":"11.5.51","versionType":"semver"},{"version":"12.0.0","status":"affected","lessThan":"12.4.46","versionType":"semver"},{"version":"13.0.0","status":"affected","lessThan":"13.4.31","versionType":"semver"},{"version":"14.0.0","status":"affected","lessThan":"14.3.3","versionType":"semver"}],"collectionURL":"https://packagist.org","repo":"https://github.com/TYPO3/typo3","modules":["Core"]}],"references":["https://typo3.org/security/advisory/typo3-core-sa-2026-018","https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7","https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02"],"weaknesses":["CWE-502"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/49xxx/CVE-2026-49740.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49740","state":"PUBLISHED","datePublished":"2026-06-09T10:53:55.777Z","dateUpdated":"2026-07-15T12:49:15.005Z","assignerShortName":"TYPO3","assignerOrgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","dateReserved":"2026-06-01T10:52:50.597Z"},"containers":{"cna":{"title":"TYPO3 CMS - Insecure Deserialization in Core API","descriptions":[{"lang":"en","value":"TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. 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