What is CVE-2026-116880?

CVE-2026-116880 is a high-severity vulnerability in Semanticmediawiki, classified under Cross-Site Request Forgery (CSRF). CVSS score: 7.1/10. Published 2026-10-27.

How severe is CVE-2026-116880?

High severity. CVSS v3 base score is 7.1 out of 10.

CSRF in Semanticmediawiki

CVE-2026-116880

Semantic MediaWiki from 3.0.0 before 7.3.1 contains a cross-site request forgery vulnerability in Special:SMWAdmin because it overwrites the wpEditToken with a freshly generated valid token. Attackers can lure an authenticated smw-admin user to a malicious page that triggers schema setup, entity-disposal, or job actions, causing semantic data loss and resource exhaustion.

Vulnerability class: CSRF (Cross-Site Request Forgery)

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

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H.

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-352 — Cross-Site Request Forgery (CSRF)

References

github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-7f7v-2q… (vendor-advisory)
www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-csrf-via-spe… (third-party-advisory)

Frequently asked questions

What is CVE-2026-116880?: CVE-2026-116880 is a high-severity vulnerability in Semanticmediawiki, classified under Cross-Site Request Forgery (CSRF). CVSS score: 7.1/10. Published 2026-10-27.
How severe is CVE-2026-116880?: High severity. CVSS v3 base score is 7.1 out of 10.