CVE-2021-30157
Medium
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.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Mediawiki
PublishedApr 6, 2021
First seenApr 6, 2021
How to fix
Update
- mediawiki mediawiki1.31.12, 1.35.2 or later
Vendor advisories
- debian.org/security/2021/dsa-4889
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/26UJGHF7LJDOCQN6A3Z4PM7PYRKENJHE/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OMSV7B2TCFBOCICN3B4SMQP5HVRJQIT/
- security.gentoo.org/glsa/202107-40
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mediawiki mediawiki | v < 1.31.12, 1.32.0 ≤ v < 1.35.2 | 1.31.12, 1.35.2 |
| debian debian_linux | 10.0 | — |
| fedoraproject fedora | 33, 34 | — |
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