Medium severity · published Oct 27, 2026
CVE-2026-116887
Semantic MediaWiki 3.0.0 before 7.3.1 Stored XSS via Special:Browse Keyword Property
New
5.4
CVSS
0.1%
EPSS
No
On KEV
Description
Semantic MediaWiki from 3.0.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with page-edit rights to inject HTML through Keyword-typed property values rendered unescaped on Special:Browse. Attackers can annotate a Keyword property with an event-handler payload that executes JavaScript in viewers' sessions, including administrators, to read tokens and perform actions.
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 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
SemanticMediaWiki · SemanticMediaWiki
3.0.0 before 7.3.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116887
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116887
github.com
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9
www.vulncheck.com
https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-stored-xss-via-special-browse-keyword-property
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