CVE-2026-116874 SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via JsonResultPrinter Default Parameter

What is CVE-2026-116874?

CVE-2026-116874 is a medium-severity vulnerability in SemanticMediaWiki, published on 27 Oct 2026.

Official 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.

Weakness: CWE-79

Which versions are affected by CVE-2026-116874?

It affects 1 product.

Products include Semantic-Mediawiki Semantic Mediawiki.

How do I fix CVE-2026-116874?

No fix has been published for CVE-2026-116874 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116874 being exploited?

There is no known exploitation of CVE-2026-116874 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-2026-116875 SemanticMediaWiki 3.0.0 before 7.3.1 Reflected XSS via Special:Ask Separator Parameters Medium 5.3
• CVE-2026-116884 SemanticMediaWiki 5.0.0 before 7.3.1 Stored XSS via Tooltip Module data-* Attributes 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-46wr-658f-fvq4, GHSA-574v-j8hf-88h3.