CVE-2026-77607

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

Published Sep 18, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-7xv3-gf2g-498h Semantic MediaWiki affected by Special:Ask table `sep` parameter reflected XSS
History
Type Values Removed Values Added
First Time appeared Semantic-mediawiki
Semantic-mediawiki semantic Mediawiki
Vendors & Products Semantic-mediawiki
Semantic-mediawiki semantic Mediawiki
Type Values Removed Values Added
Description 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.
Title Semantic MediaWiki affected by Special:Ask table `sep` parameter reflected XSS
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 18, 2026, 7:55 PM
Reserved
Aug 20, 2026, 8:48 PM
Status
Awaiting Analysis
Published
Sep 18, 2026, 5:17 PM
Modified
Sep 23, 2026, 6:12 PM