Vulnerability · Published May 11, 2026 · Assigned by wikimedia-foundation
CVE-2026-34094Customized help link for page protection indicator is relative to subpage name, because the link target is missing the "/wiki/" prefix
Low 2.0
In plain English
A low-severity security flaw in MediaWiki from Wikimedia Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)2.0Low
Exploit odds (30 days)0.2%top 93.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/Page/Article.Php. This issue affects MediaWiki: from * before 1.43.7, 1.44.4, 1.45.2.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | mediawiki | 1:1.43.8+dfsg-1~deb13u1 | DEBIAN-CVE-2026-34094 |
| Debian:14 | mediawiki | 1:1.43.8+dfsg-1 | DEBIAN-CVE-2026-34094 |
| Ubuntu:25.10 | mediawiki | no fix listed | UBUNTU-CVE-2026-34094 |
| Ubuntu:26.04:LTS | mediawiki | no fix listed | UBUNTU-CVE-2026-34094 |
| Ubuntu:26.10 | mediawiki | no fix listed | UBUNTU-CVE-2026-34094 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Wikimedia Foundation | MediaWiki | * – before 1.43.7, 1.44.4, 1.45.2 |
Weakness: CWE-668 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N