Medium severity · published Oct 27, 2026
CVE-2026-116889
SemanticMediaWiki 2.5.0 before 7.3.1 Stored XSS via Special:Browse Code Property
New
6.1
CVSS
–
EPSS
No
On KEV
Description
SemanticMediaWiki from 2.5.0 before 7.3.1 contains a stored cross-site scripting vulnerability that allows users with page-edit rights to inject script through Code-typed property values. Attackers can annotate a valid JSON value embedding HTML markup, which the CodeStringValueFormatter renders unescaped on Special:Browse, executing JavaScript in viewers' sessions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SE
SemanticMediaWiki · SemanticMediaWiki
2.5.0 before 7.3.1 · source: vendor
SM
Semantic Mediawiki · Semantic-mediawiki
2.5.0 before 7.3.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116889
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116889
github.com
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-6v7f-crgp-hhvp
www.vulncheck.com
https://www.vulncheck.com/advisories/semanticmediawiki-2.5.0-before-7.3.1-stored-xss-via-special-browse-code-property
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