Medium severity · published Oct 27, 2026
CVE-2026-116881
Semantic MediaWiki 3.0.0 before 7.3.1 XSS via Property-Value Autocomplete
New
6.1
CVSS
–
EPSS
No
On KEV
Description
Semantic MediaWiki from 3.0.0 before 7.3.1 contains a cross-site scripting vulnerability that allows attackers to inject markup by storing malicious semantic property values rendered unescaped in autocomplete suggestions. When another user opens the property-value autocomplete with an empty query, jquery.autocomplete.js concatenates the raw PValueLookup API value into HTML via container.html(), altering the dropdown and potentially executing script.
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
3.0.0 before 7.3.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116881
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116881
github.com
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf
www.vulncheck.com
https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-xss-via-property-value-autocomplete
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