CVE-2026-116884 SemanticMediaWiki 5.0.0 before 7.3.1 Stored XSS via Tooltip Module data-* Attributes

What is CVE-2026-116884?

CVE-2026-116884 is a medium-severity vulnerability in SemanticMediaWiki, published on 27 Oct 2026.

Official description

SemanticMediaWiki from 5.0.0 before 7.3.1 contains a stored cross-site scripting vulnerability in ext.smw.tooltip.tippy.js that renders data-* attributes via innerHTML with allowHTML enabled. Editors can plant a .smw-highlighter span with a malicious data-content, data-title, data-top, data-bottom, or data-theme attribute to execute JavaScript when viewers, including administrators, hover it.

Weakness: CWE-79

Which versions are affected by CVE-2026-116884?

It affects 1 product.

Products include Semantic-Mediawiki Semantic Mediawiki.

How do I fix CVE-2026-116884?

No fix has been published for CVE-2026-116884 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116884 being exploited?

There is no known exploitation of CVE-2026-116884 in the wild and no public exploit code.

Other vulnerabilities in SemanticMediaWiki

• CVE-2022-48614 Cross-site Scripting in Semantic MediaWiki Medium 6.1
• CVE-2026-116874 SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via JsonResultPrinter Default Parameter Medium 5.3
• CVE-2026-116875 SemanticMediaWiki 3.0.0 before 7.3.1 Reflected XSS via Special:Ask Separator Parameters Medium 5.3
• CVE-2026-116889 SemanticMediaWiki 2.5.0 before 7.3.1 Stored XSS via Special:Browse Code Property Medium 5.3
• CVE-2026-116892 SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via Special:Search smw Profile Medium 5.3

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• GitHub advisory
• How this page is made

Also known as GHSA-4wj6-wmjp-pmhh, GHSA-h32m-8349-hq44.