{"id":"CVE-2020-26228","aliases":["BIT-typo3-2020-26228","GHSA-954j-f27r-cj52"],"url":"https://o3.security/vulnerability/CVE-2020-26228","summary":"Cleartext storage of session identifier","details":"TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 user session identifiers were stored in cleartext - without processing with additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.","published":"2020-11-23T21:15:12.140Z","modified":"2026-08-27T08:14:19.122995Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"9.5.23"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"10.4.10"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"8.7.38"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"10.4.10"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"9.5.23"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"8.7.38"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-954j-f27r-cj52"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2020-011"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T08:14:19.122995Z"}}