CVE-2021-30158: Debian Linux

Medium severity, CVSS 5.3. EPSS: 1.7% chance of exploitation in the next 30 days.

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Blocked users are unable to use Special:ResetTokens. This has security relevance because a blocked user might have accidentally shared a token, or might know that a token has been compromised, and yet is not able to block any potential future use of the token by an unauthorized party.

Affected products

• Debian Debian Linux: version 9.0 only; version 10.0 only
• Fedoraproject Fedora: version 33 only; version 34 only
• Mediawiki Mediawiki: before 1.31.12 (fixed in 1.31.12); from 1.32.0, before 1.35.2 (fixed in 1.35.2)

Published 2021-04-06. Last modified 2026-06-17.