CVE-2021-30153

medium

Published — · Modified —

CVSS v3

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CVSS v2

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VIR risk

5.5

Description

An issue was discovered in the VisualEditor extension in MediaWiki before 1.31.13, and 1.32.x through 1.35.x before 1.35.2. . When using VisualEditor to edit a MediaWiki user page belonging to an existing, but hidden, user, VisualEditor will disclose that the user exists. (It shouldn't because they are hidden.) This is related to ApiVisualEditor.

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-2021-30153

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-2021-30153

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