An issue was discovered in MediaWiki before 1.35.8, 1.36.x and 1.37.x before 1.37.5, and 1.38.x before 1.38.3.

published 2023-05-29 3 y ago modified 2026-06-17 4 mo ago also BIT-mediawiki-2022-41766 , EUVD-2022-44937

cvss: 4.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits: 0; none known

An issue was discovered in MediaWiki before 1.35.8, 1.36.x and 1.37.x before 1.37.5, and 1.38.x before 1.38.3. Upon an action=rollback operation, the alreadyrolled message can leak a user name (when the user has been revision deleted/suppressed).

Patch / fix

fixed in 2 links 1

bitnami mediawiki 1.35.8, 1.37.5, 1.38.3
mediawiki mediawiki 1.35.8, 1.37.5, 1.38.3

phabricator.wikimedia.org/T307278 patch

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 21 mo ago (2025-01-14)

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

phabricator.wikimedia.org https://phabricator.wikimedia.org/T307278 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
OSV	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
bitnami	mediawiki	<1.35.8 >=1.36.0, <1.37.5 >=1.38.0, <1.38.3	1.35.8 1.37.5 1.38.3

Classification

Weakness

CWE-732 Incorrect Permission Assignment for Critical Resource

References

phabricator.wikimedia.org /T307278
exploit, issue-tracking, patch, web
nvd.nist.gov /vuln/detail/CVE-2022-41766
web

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary