Medium severity · published Oct 27, 2026
CVE-2026-116888
SemanticMediaWiki 3.2.0 before 7.3.1 Stored XSS via Special:Browse Group Heading
New
5.4
CVSS
0.1%
EPSS
No
On KEV
Description
SemanticMediaWiki from 3.2.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with the smw-schemaedit right to inject markup through an unescaped property group schema canonical_name. Attackers can save a schema whose canonical_name holds script markup, which GroupFormatter renders unescaped in Special:Browse headings, executing JavaScript in viewers' sessions including administrators.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
SemanticMediaWiki · SemanticMediaWiki
3.2.0 before 7.3.1 · source: vendor
SM
Semantic Mediawiki · Semantic-mediawiki
3.2.0 before 7.3.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116888
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116888
github.com
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-fp94-c5vh-cmhp
www.vulncheck.com
https://www.vulncheck.com/advisories/semanticmediawiki-3.2.0-before-7.3.1-stored-xss-via-special-browse-group-heading
More from SemanticMediaWiki
8.6
CVE-2025-61682
Semantic MediaWiki vulnerable to stored XSS through wikitext via improper use of non-reserved data attributes
7.5
CVE-2026-116878
Semantic MediaWiki 2.5.0 before 7.3.1 Resource Exhaustion via Special:PropertyLabelSimilarity
7.5
CVE-2026-116872
Semantic MediaWiki 3.0.0 before 7.3.1 Denial of Service via Special:Search Compact Filters
7.5
CVE-2026-116871
Semantic MediaWiki 3.0.0 before 7.3.1 Uncontrolled Recursion via Special:Ask
7.3
CVE-2026-116890
Semantic MediaWiki 3.0.0 before 7.3.0 Missing Authorization via smwtask API