Stored Cross-Site Scripting Vulnerability in Semantic MediaWiki by Semantic MediaWiki
CVE-2026-116887

5.3MEDIUM

Key Information:

Vendor

Semanticmediawiki

Status
Semanticmediawiki
Vendor
CVE Published:
27 October 2026

What is CVE-2026-116887?

Semantic MediaWiki versions prior to 7.3.1 are vulnerable to a stored cross-site scripting attack. Users with page-edit rights can exploit this vulnerability by incorporating HTML payloads in Keyword-type properties. When rendered on the Special:Browse page, these unescaped values can execute JavaScript in the context of users viewing the page, including administrators. This allows attackers to steal sensitive information and manipulate user sessions, making it crucial for affected users to update to the latest version to mitigate this security risk.

Affected Version(s)

SemanticMediaWiki 3.0.0 < 7.3.1

SemanticMediaWiki 7.3.1

References

https://github.com/SemanticMediaWiki/SemanticMediaWiki/se...
vendor-advisory
https://www.vulncheck.com/advisories/semantic-mediawiki-3...
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

manus-use
.