CVE-2021-30157 — Cross-site Scripting in Mediawiki

CWE-79 — Cross-site Scripting5 documents5 sources
Severity
6.1MEDIUMNVD
EPSS
0.7%
top 27.20%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
MediawikiDebian MediawikiDebian Linux+1 more
Timeline
PublishedApr 6
Latest updateMay 24

Description

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. On ChangesList special pages such as Special:RecentChanges and Special:Watchlist, some of the rcfilters-filter-* label messages are output in HTML unescaped, leading to XSS.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitability: 2.8 | Impact: 2.7

Affected Packages3 packages

▶debiandebian/mediawiki< mediawiki 1:1.35.2-1 (bookworm)
▶NVDmediawiki/mediawiki1.32.0 — 1.35.2+1
▶Debianmediawiki/mediawiki< 1:1.35.2-1+3

Also affects: Debian Linux 10.0, Fedora 33, 34

Patches

Patch: phabricator.wikimedia.org ↗Patch: phabricator.wikimedia.org ↗

🔴Vulnerability Details

2
GHSA
GHSA-5586-f3jq-cmhq: An issue was discovered in MediaWiki before 1↗2022-05-24
▶
OSV
CVE-2021-30157: An issue was discovered in MediaWiki before 1↗2021-04-06
▶

📋Vendor Advisories

2
Red Hat
mediawiki: XSS due to unescaped messages used in HTML on ChangesList pages↗2021-03-22
▶
Debian
CVE-2021-30157: mediawiki - An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x be...↗2021
▶
CVE-2021-30157 — Cross-site Scripting in Mediawiki | cvebase