{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49740","assignerOrgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","state":"PUBLISHED","assignerShortName":"TYPO3","dateReserved":"2026-06-01T10:52:50.597Z","datePublished":"2026-06-09T10:53:55.777Z","dateUpdated":"2026-07-15T12:49:15.005Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f4fb688c-4412-4426-b4b8-421ecf27b14a","shortName":"TYPO3","dateUpdated":"2026-07-15T12:49:15.005Z"},"title":"TYPO3 CMS - Insecure Deserialization in Core API","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","type":"CWE"}]}],"affected":[{"vendor":"TYPO3","product":"TYPO3 CMS","collectionURL":"https://packagist.org","packageName":"typo3/cms-core","repo":"https://github.com/TYPO3/typo3","modules":["Core"],"versions":[{"status":"affected","version":"0","lessThan":"10.4.57","versionType":"semver"},{"status":"affected","version":"11.0.0","lessThan":"11.5.51","versionType":"semver"},{"status":"affected","version":"12.0.0","lessThan":"12.4.46","versionType":"semver"},{"status":"affected","version":"13.0.0","lessThan":"13.4.31","versionType":"semver"},{"status":"affected","version":"14.0.0","lessThan":"14.3.3","versionType":"semver"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","versionEndExcluding":"10.4.57","vulnerable":true},{"criteria":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","versionStartIncluding":"11.0.0","versionEndExcluding":"11.5.51","vulnerable":true},{"criteria":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","versionStartIncluding":"12.0.0","versionEndExcluding":"12.4.46","vulnerable":true},{"criteria":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","versionStartIncluding":"13.0.0","versionEndExcluding":"13.4.31","vulnerable":true},{"criteria":"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*","versionStartIncluding":"14.0.0","versionEndExcluding":"14.3.3","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"descriptions":[{"lang":"en","value":"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.","supportingMedia":[{"type":"text/html","base64":false,"value":"TYPO3's cache frontend (<code>VariableFrontend</code>) and persistent key-value store (<code>Registry</code>) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or <code>sys_registry</code> 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."}]}],"references":[{"url":"https://typo3.org/security/advisory/typo3-core-sa-2026-018","tags":["vendor-advisory"]},{"url":"https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7","name":"Git commit of main branch","tags":["patch"]},{"url":"https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02","name":"Git commit of 13.4 branch","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subAvailabilityImpact":"HIGH","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":6.3,"vectorString":"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"}}],"credits":[{"lang":"en","value":"z3rco","type":"reporter"},{"lang":"en","value":"Chowdhury Faizal Ahammed","type":"reporter"},{"lang":"en","value":"Rick Larabee","type":"reporter"},{"lang":"en","value":"Vitaly Simonovich","type":"reporter"},{"lang":"en","value":"Nozomu Sasaki","type":"reporter"},{"lang":"en","value":"Mert Akdag","type":"reporter"},{"lang":"en","value":"tikket","type":"reporter"},{"lang":"en","value":"Shafi Almutairi","type":"reporter"},{"lang":"en","value":"Oliver Hader","type":"remediation developer"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.1"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-09T13:40:19.741208Z","id":"CVE-2026-49740","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-09T13:40:40.839Z"}}]}}