Description
An issue was discovered in the AbuseFilter extension for MediaWiki before 1.39.9, 1.40.x and 1.41.x before 1.41.3, and 1.42.x before 1.42.2. An API caller can match a filter condition against AbuseFilter logs even if the caller is not authorized to view the log details for the filter.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | mediawiki | 1:1.39.10-1 | — |
| Debian 13 | mediawiki | 1:1.39.10-1 | — |
| Debian 12 | mediawiki | 1:1.39.10-1~deb12u1 | DSA-5785-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | mediawiki | No fix yet | — |
| Ubuntu 26.04 LTS | mediawiki | No fix yet | — |
| Ubuntu 25.10 | mediawiki | No fix yet | — |
| Ubuntu 18.04 LTS | mediawiki | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 24.04 LTS | mediawiki | No fix yet | — |
| Ubuntu Pro 22.04 LTS | mediawiki | No fix yet | — |
| Ubuntu Pro 20.04 LTS | mediawiki | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | mediawiki/abuse-filter | < 1.39.9 | 1.39.9 | GHSA-rmcp-9fhq-58pv |
| Packagist | mediawiki/abuse-filter | >= 1.40.0, < 1.41.3 | 1.41.3 | GHSA-rmcp-9fhq-58pv |
| Packagist | mediawiki/abuse-filter | >= 1.42.0, < 1.42.2 | 1.42.2 | GHSA-rmcp-9fhq-58pv |
Advisories 2
- DSA-5785-1 mediawiki - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2024-3087 MediaWiki: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 19, 2025