CVE-2025-67484: Wikimedia Foundation MediaWiki
Affects mediawikiSource GCVE Database
Not known to be exploited · CVSS 9.8 Critical.
Data as of 5 Nov 2026, 00:01 UTC
Contested
Critical score, yet low EPSS after six months- EPSS
- 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 3 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10mediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 25.10mediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu Pro 24.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Ubuntu Pro 22.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/focalOther threats | Affected
| Fixed in– |
Ubuntu 18.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
The vulnerability affects versions prior to 1.39.16, 1.43.6, 1.44.3, and 1.45.1. Users should upgrade to these or later versions where the issue is fixed. No cloud service remediation applies as this is self-hosted software. There is no indication of known exploits in the wild at this time.
Description
A critical vulnerability (CVE-2025-67484) exists in Wikimedia Foundation MediaWiki affecting multiple versions prior to 1.39.16, 1.43.6, 1.44.3, and 1.45.1. The issue is related to the program file includes/Api/ApiFormatXml.Php. The vulnerability has a CVSS score of 9.8, indicating high severity with network attack vector, no privileges required, no user interaction, and impacts confidentiality, integrity, and availability.