CVE-2026-103444Stored XSS through system messages in WikiForum
Updated under an hour ago ()
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It affects The Wikimedia Foundation MediaWiki WikiForum extension. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS. This issue affects MediaWiki WikiForum extension: master.
- CVSS
- 1.1 LOW (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/R:U/V:D/RE:M/U:Amber
- Weakness (CWE)
- CWE-80
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- wikimedia-foundation
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 30, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
The Wikimedia Foundation MediaWiki WikiForum extension wikimedia_foundation:mediawiki_wikiforum_extension (from the name) | master | CNA record |
References
- https://phabricator.wikimedia.org/T414227
- https://gerrit.wikimedia.org/r/q/I7849ef0f9c3eff48fd63e47e5b8affc3b25bb4dd
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.