CVE-2023-22912

5.3 mediumEPSS 0.4%

Medium (5.3) in mediawiki mediawiki. EPSS 0.4% chance of exploitation in the next 30 days.

An issue was discovered in MediaWiki before 1.35.9, 1.36.x through 1.38.x before 1.38.5, and 1.39.x before 1.39.1. CheckUser TokenManager insecurely uses AES-CTR encryption with a repeated (aka re-used) nonce, allowing an adversary to decrypt.

Severity

CVSS 3.1

5.3 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)
CWE: CWE-330
Published: 2023-01-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

mediawiki:mediawiki

References

https://phabricator.wikimedia.org/T315123
https://phabricator.wikimedia.org/T315123

Check your stack JSON