CVE-2026-116889

Medium

Description

SemanticMediaWiki from 2.5.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with page-edit rights to inject script through Code-typed property values. Attackers can annotate a valid JSON value embedding HTML markup, which the CodeStringValueFormatter renders unescaped on Special:Browse, executing JavaScript in viewers' sessions.

SeverityMedium

CVSS6.1

Exploit probability—

ProductSemantic-mediawiki Semantic Mediawiki

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

semantic-mediawiki semantic_mediawiki7.3.1 or later

Vendor advisories

github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-6v7f-crgp-hhvp

Affected products

Product	Affected versions	Fixed in
semantic-mediawiki semantic_mediawiki	2.5.0 ≤ v < 7.3.1	7.3.1

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