Description
An issue was discovered in MediaWiki before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. The REST API publicly caches results from private wikis.
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 | 1:1.35.5-1 | — |
| Debian 13 | mediawiki | 1:1.35.5-1 | — |
| Debian 12 | mediawiki | 1:1.35.5-1 | — |
| Debian 11 | mediawiki | 1:1.35.8-1~deb11u1 | DSA-5246-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | mediawiki | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | mediawiki | No fix yet | — |
Advisories 2
- DSA-5246-1 mediawiki - security update Debian Security (DSA / DLA) · Mar 9, 2026
- WID-SEC-2022-1512 MediaWiki: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 21, 2023