CVE-2025-61682

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

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.

Affected

SemanticMediaWiki

CVSS v3.1 GITHUB

8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

EPSS

0.29% chance of exploitation in the next 30 days, 20th percentile

Published

2026-09-18

Proof-of-concept exploits (1)

• advisories/GHSA-hg8h-557g-q8pp

References

• CVE Record
• NVD entry