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Servers and applications

CVE-2021-21339

Cleartext storage of session identifier

Severity
High 7.5
Published
16 Mar 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
6.2.57, 7.6.51, 8.7.40, 9.5.25, 10.4.14, 11.1.1
Also known as
GHSA-qx3w-4864-94ch
Sources
NVD, Project advisories (GitHub)

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…

Affected software

SoftwareAffected versions
TYPO3Servers and applications · cpe:a:typo3:typo3
  • From 6.2.0 before 6.2.57
  • From 7.0.0 before 7.6.51
  • From 8.0.0 before 8.7.40
  • From 9.0.0 before 9.5.25
  • From 10.0.0 before 10.4.14
  • From 11.0.0 before 11.1.1
TYPO3Servers and applications · github:typo3/typo3
  • From 11.0.0 before 11.1.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-21339
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-21339
  • GitHub Advisory Database https://github.com/advisories/GHSA-qx3w-4864-94ch
  • github.com https://github.com/TYPO3/typo3/security/advisories/GHSA-qx3w-4864-94ch