CVE-2026-116881

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 v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf
https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-xss-via-property-value-autocomplete
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf

Configurations

No configuration.

History

02 Nov 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf -~~	() https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-mvpf-4wj8-2hwf -

27 Oct 2026, 11:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-27 11:17

Updated : 2026-11-02 19:17

NVD link : CVE-2026-116881

Mitre link : CVE-2026-116881

CVE.ORG link : CVE-2026-116881

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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