What is CVE-2026-116885?

CVE-2026-116885 is a medium-severity vulnerability in Semanticmediawiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-10-27.

How severe is CVE-2026-116885?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Semanticmediawiki

CVE-2026-116885

Semantic MediaWiki from 3.1.0 before 7.3.1 contains a reflected cross-site scripting vulnerability in the Special:SMWAdmin ID lookup that allows unauthenticated attackers to inject markup through the unescaped id parameter. Attackers can lure an smw-admin administrator into opening a crafted lookup link, bypassing the auto-satisfied edit-token check, to execute script and perform privileged actions in the administrator's session.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-27 · last modified 2026-10-27.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Semanticmediawiki

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-4fr3-gh… (vendor-advisory)
www.vulncheck.com/advisories/semantic-mediawiki-before-7.3.1-reflected-xss-via-… (third-party-advisory)

Frequently asked questions

What is CVE-2026-116885?: CVE-2026-116885 is a medium-severity vulnerability in Semanticmediawiki, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-10-27.
How severe is CVE-2026-116885?: Medium severity. CVSS v3 base score is 6.1 out of 10.