CVE-2026-77607Semantic MediaWiki affected by Special:Ask table `sep` parameter reflected XSS
Updated under an hour ago ()
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It affects SemanticMediaWiki. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Semantic MediaWiki is a free, open-source extension to MediaWiki that lets users store and query data within the wiki's pages. Prior to version 7.2.0, `sep` was inserted verbatim into HTML cell joins. This made it possible to inject HTML through the separator value. Version 7.2.0 fixes the issue.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
SemanticMediaWiki SemanticMediaWiki semanticmediawiki:semanticmediawiki (from the name) | before 7.2.0 | CNA record |
References
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-7xv3-gf2g-498hx-refsource-confirm
- https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0x-refsource-misc
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.