XSS in Semanticmediawiki
CVE-2026-116875
SemanticMediaWiki from 3.0.0 before 7.3.1 contains a reflected cross-site scripting vulnerability in Special:Ask, which outputs separator parameters (sep, propsep, valuesep, delim, separator) without HTML escaping in list, category, DSV, and CSV result printers. Unauthenticated attackers can send victims crafted Special:Ask links using request_type=raw or request_type=special_page to execute JavaScript in the wiki's origin, stealing sessions or CSRF tokens.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
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
Weakness classification (CWE)
References
- github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-3v2c-r7… (vendor-advisory)
- www.vulncheck.com/advisories/semanticmediawiki-3.0.0-before-7.3.1-reflected-xss… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-116875?
- CVE-2026-116875 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-2026-116875?
- Medium severity. CVSS v3 base score is 6.1 out of 10.