🛡️ CVE-2020-25828 — mediawiki

🟡 CVSS 5.0 — Medium ✅ No Known Exploit OSV
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

MediaWiki Cross-site Scripting (XSS) vulnerability

An issue was discovered in MediaWiki before 1.31.9 and 1.32.x through 1.34.x before 1.34.3. The non-jqueryMsg version of mw.message().parse() doesn't escape HTML. This affects both message contents (which are generally safe) and the parameters (which can be based on user input). (When jqueryMsg is loaded, it correctly accepts only whitelisted tags in message contents, and escapes all parameters. Situations with an unloaded jqueryMsg are rare in practice, but can for example occur for Special:SpecialPages on a wiki with no extensions installed.)

Affected software

CVE-2020-25828 is recorded against 2 packages.

  • mediawiki
  • mediawiki/core (from 1.35.0-rc.0 up to 1.35.0)

Timeline and source

Published on 6 March 2024 and last revised on 3 April 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

lists.fedoraproject.org (Web)
lists.wikimedia.org (Web)
lists.wikimedia.org (Web)
lists.wikimedia.org (Web)
nvd.nist.gov (Web)

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-03-06
Updated 2026-08-12
Modified 2025-04-03
Fix URL N/A

Affected Packages

Software From version Fixed in
mediawiki — —
mediawiki/core 1.35.0-rc.0 1.35.0

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