CVE-2021-21339
MEDIUM5.9EPSS 0.13%Cleartext storage of session identifier
Published: 3/23/2021Modified: 3/13/2026
Description
### Problem 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. ### Solution Update 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. ### Credits Thanks 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. ### References * [TYPO3-CORE-SA-2021-006](https://typo3.org/security/advisory/typo3-core-sa-2021-006)
Affected packages (3)
- Bitnami/typo3>= 6.2.0, < 6.2.57, >= 7.0.0, < 7.6.51, >= 8.0.0, < 8.7.40, >= 9.0.0, < 9.5.25, >= 10.0.0, < 10.4.14, >= 11.0.0, < 11.1.1
- Packagist/typo3/cms>= 10.0.0, < 10.4.14
- Packagist/typo3/cms-core>= 6.2.0, < 6.2.57
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
References (6)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-21339
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21339.yaml
- WEBhttps://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21339.yaml
- WEBhttps://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94ch
- WEBhttps://packagist.org/packages/typo3/cms-core
- WEBhttps://typo3.org/security/advisory/typo3-core-sa-2021-006