{"id":"GHSA-qx3w-4864-94ch","summary":"Cleartext storage of session identifier","details":"\n### Problem\nUser 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.\n\n### Solution\nUpdate to TYPO3 versions 6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1 that fix the problem described.\n\n### Credits\nThanks to TYPO3 security team member Oliver Hader who reported this issue and to TYPO3 core & security team members Benni Mack & Oliver Hader who fixed the issue.\n\n### References\n* [TYPO3-CORE-SA-2021-006](https://typo3.org/security/advisory/typo3-core-sa-2021-006)","aliases":["BIT-typo3-2021-21339","CVE-2021-21339"],"modified":"2026-07-08T06:29:14.883877852Z","published":"2021-03-23T01:53:42Z","database_specific":{"cwe_ids":["CWE-312"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2021-03-23T01:41:13Z","nvd_published_at":"2021-03-23T02:15:00Z"},"references":[{"type":"WEB","url":"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94ch"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21339"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21339.yaml"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21339.yaml"},{"type":"WEB","url":"https://packagist.org/packages/typo3/cms-core"},{"type":"WEB","url":"https://typo3.org/security/advisory/typo3-core-sa-2021-006"}],"affected":[{"package":{"name":"typo3/cms-core","ecosystem":"Packagist","purl":"pkg:composer/typo3/cms-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.2.57"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 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