{"id":"CVE-2020-11067","aliases":["BIT-typo3-2020-11067","GHSA-2wj9-434x-9hvp"],"url":"https://o3.security/vulnerability/CVE-2020-11067","summary":"Insecure Deserialization in Backend User Settings in TYPO3 CMS","details":"In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.","published":"2020-05-14T00:15:11.400Z","modified":"2026-08-27T08:39:59.798853Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"9.5.17"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"10.4.2"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"10.4.2"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"9.5.17"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-2wj9-434x-9hvp"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T08:39:59.798853Z"}}