Vulnerability · Published Oct 27, 2026 · Assigned by VulnCheck

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

Medium 6.1

In plain English

A medium-severity cross-site scripting in SemanticMediaWiki from SemanticMediaWiki. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.2%top 93.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
SemanticMediaWiki	SemanticMediaWiki	3.1.0 – before 7.3.1

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-574v-j8hf-88h3) vendor-advisory
VulnCheck Advisory: SemanticMediaWiki 3.1.0 before 7.3.1 Reflected XSS via JsonResultPrinter Default Parameter third-party-advisory