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CVE-2026-116887 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9	CISA-ADP	ExploitVendor Advisory
https://github.com/SemanticMediaWiki/SemanticMediaWiki/security/advisories/GHSA-r7xx-9gqh-q8p9	[email protected]	ExploitVendor Advisory
https://www.vulncheck.com/advisories/semantic-mediawiki-3.0.0-before-7.3.1-stored-xss-via-special-browse-keyword-property	[email protected]	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
semantic-mediawiki semantic mediawiki	>= 3.0.0, < 7.3.1
CPE cpe:2.3:a:semantic-mediawiki:semantic_mediawiki::::::mediawiki::* Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Nov 4, 2026	CVE Modified	CISA-ADP
Nov 3, 2026	Initial Analysis	[email protected]
Oct 27, 2026	New CVE Received	[email protected]