CVE-2026-77607

MEDIUM 6.1

Semantic MediaWiki affected by Special:Ask table `sep` parameter reflected XSS

CVSS Score

6.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-79
Vendor	semanticmediawiki
Product	semanticmediawiki
Published	Sep 18, 2026
Last Updated	Sep 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

SemanticMediaWiki / SemanticMediaWiki

< 7.2.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-7xv3-gf2g-498h github.com: https://github.com/SemanticMediaWiki/SemanticMediaWiki/releases/tag/7.2.0