CVE-2021-21339
Cleartext storage of session identifier
5.9
MEDIUM
CVSS 3.1
EPSS 0.92%
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.
How to fix CVE-2021-21339
To remediate CVE-2021-21339, upgrade the affected package to a fixed version below.
- —upgrade to 10.4.14 or later
- —upgrade to 6.2.57 or later
Is CVE-2021-21339 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 10.0.0, < 10.4.14
- >= 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 |