CVE-2026-116874

Medium

Description

SemanticMediaWiki from 3.1.0 before 7.3.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the unescaped default parameter in JsonResultPrinter. Attackers can lure victims to a crafted Special:Ask link with a zero-result query and request_type=special_page, executing JavaScript in the wiki origin to steal sessions or CSRF tokens.

SeverityMedium

CVSS6.1

Exploit probability—

ProductSemanticMediaWiki

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

SemanticMediaWiki SemanticMediaWiki7.3.1 or later

Vendor advisories

github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-574v-j8hf-88h3

Affected products

Product	Affected versions	Fixed in
SemanticMediaWiki SemanticMediaWiki	3.1.0 ≤ v < 7.3.1	7.3.1

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