CVE-2025-61682

Semantic MediaWiki vulnerable to stored XSS through wikitext via improper use of non-reserved data attributes

Published Sep 18, 2026 CVSS 3.1 · 8.6 High 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. Versions starting in 3.1.0 and prior to 7.0.0 insert the unsanitized value of a data attribute into the DOM as HTML, allowing for stored XSS through wikitext. Version 7.0.0 patches 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-hg8h-557g-q8pp Semantic MediaWiki vulnerable to stored XSS through wikitext via improper use of non-reserved data attributes
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
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

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. Versions starting in 3.1.0 and prior to 7.0.0 insert the unsanitized value of a data attribute into the DOM as HTML, allowing for stored XSS through wikitext. Version 7.0.0 patches the issue.
Title Semantic MediaWiki vulnerable to stored XSS through wikitext via improper use of non-reserved data attributes
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 18, 2026, 5:23 PM
Reserved
Sep 29, 2025, 8:25 PM
Status
Awaiting Analysis
Published
Sep 18, 2026, 4:17 PM
Modified
Oct 14, 2026, 1:10 PM