{"id":"CVE-2021-21339","aliases":["BIT-typo3-2021-21339","GHSA-qx3w-4864-94ch"],"url":"https://o3.security/vulnerability/CVE-2021-21339","summary":"Cleartext storage of session identifier","details":"TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 user session identifiers were stored in cleartext - without processing of 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. This is fixed in versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1.","published":"2021-03-23T02:15:12.453Z","modified":"2026-08-27T03:49:17.713771681Z","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":"6.2.57"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"7.6.51"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"8.7.40"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"10.4.14"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"11.1.1"},{"ecosystem":"Packagist","name":"typo3/cms-core","fixedVersion":"9.5.25"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"10.4.14"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"11.1.1"},{"ecosystem":"Packagist","name":"typo3/cms","fixedVersion":"9.5.25"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94ch"},{"type":"ADVISORY","url":"https://packagist.org/packages/typo3/cms-core"},{"type":"ADVISORY","url":"https://typo3.org/security/advisory/typo3-core-sa-2021-006"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T03:49:17.713771681Z"}}