CVE-2021-30158

medium

Published — · Modified —

CVSS v3

—

CVSS v2

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VIR risk

5.5

Description

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.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-30158

OS impact

OS	Version	Status	Fixed in
arch		fixed	`1.35.2-1`
debian	bookworm	fixed	`1:1.35.2-1`
debian	bullseye	fixed	`1:1.35.2-1`
debian	forky	fixed	`1:1.35.2-1`
debian	sid	fixed	`1:1.35.2-1`
debian	trixie	fixed	`1:1.35.2-1`

References

https://security-tracker.debian.org/tracker/CVE-2021-30158

Verify integrity in audit chain (admin only). AS-IS.