CVE-2026-103045: mediawiki · Cross-site Scripting
Affects mediawikiSource GCVE Database
Not known to be exploited · CVSS 6.1 Medium · fixed in 1.46.1 : update mediawiki when convenient.
Data as of 12 Nov 2026, 23:24 UTC
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 1.46.1, 1.45.5, 1.43.10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Sep 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 13 Nov 2026.
What to do
Upgrade wikimedia/skins/Refreshed to 1.46.1, 1.45.5 or 1.43.10.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 18.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=bionicOther threats | Affected
| Fixed in– |
Ubuntu Pro 20.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/focalOther threats | Affected
| Fixed in– |
Ubuntu Pro 22.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 24.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.10mediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=stonkingOther 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
If you cannot patch yet, users should consider disabling or avoiding use of the Refreshed skin or applying any available vendor mitigations.
Description
A stored cross-site scripting (XSS) vulnerability exists in the Refreshed skin of The Wikimedia Foundation's Mediawiki software. This vulnerability arises from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts. It affects multiple versions of Mediawiki prior to 1.46.1, including several specific earlier versions. The vulnerability has a medium severity rating with a CVSS score of 6.1.
References
- nvd.nist.gov/vuln/detail/CVE-2026-103045 (opens in a new tab)
- gerrit.wikimedia.org/r/c/mediawiki/skins/Refreshed/+/1309277 (opens in a new tab)
- phabricator.wikimedia.org/T268377 (opens in a new tab)
- ubuntu.com/security/CVE-2026-103045 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-103045 (opens in a new tab)