Medium severity5.9NVD Advisory· Published Mar 23, 2021· Updated Jun 17, 2026
CVE-2021-21339
CVE-2021-21339
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
typo3/cms-corePackagist | >= 6.2.0, < 6.2.57 | 6.2.57 |
typo3/cms-corePackagist | >= 7.0.0, < 7.6.51 | 7.6.51 |
typo3/cms-corePackagist | >= 8.0.0, < 8.7.40 | 8.7.40 |
typo3/cms-corePackagist | >= 10.0.0, < 10.4.14 | 10.4.14 |
typo3/cms-corePackagist | >= 11.0.0, < 11.1.1 | 11.1.1 |
typo3/cms-corePackagist | >= 9.0.0, < 9.5.25 | 9.5.25 |
typo3/cmsPackagist | >= 10.0.0, < 10.4.14 | 10.4.14 |
typo3/cmsPackagist | >= 11.0.0, < 11.1.1 | 11.1.1 |
typo3/cmsPackagist | >= 9.0.0, < 9.5.25 | 9.5.25 |
Affected products
4- osv-coords3 versions
>= 6.2.0, < 6.2.57+ 2 more
- (no CPE)range: >= 6.2.0, < 6.2.57
- (no CPE)range: >= 10.0.0, < 10.4.14
- (no CPE)range: >= 6.2.0, < 6.2.57
Patches
Vulnerability mechanics
References
7- github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-qx3w-4864-94chnvdThird Party AdvisoryWEB
- github.com/advisories/GHSA-qx3w-4864-94chghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-21339ghsaADVISORY
- packagist.org/packages/typo3/cms-corenvdRelease NotesThird Party AdvisoryWEB
- typo3.org/security/advisory/typo3-core-sa-2021-006nvdVendor AdvisoryWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2021-21339.yamlghsaWEB
- github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2021-21339.yamlghsaWEB
News mentions
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