Stored Cross-Site Scripting Vulnerability in Semantic MediaWiki
CVE-2026-116886

5.3MEDIUM

Key Information:

Vendor

Semanticmediawiki

Status
Semanticmediawiki
Vendor
CVE Published:
27 October 2026

What is CVE-2026-116886?

Semantic MediaWiki versions prior to 7.3.1 are vulnerable to a stored cross-site scripting issue, allowing malicious users with page-edit privileges to inject harmful scripts through the External Identifier property values. This vulnerability enables attackers to execute arbitrary JavaScript in the sessions of users viewing affected content on Special:Browse, including administrators. It underscores the importance of validating user input and securing applications against script injection.

Affected Version(s)

SemanticMediaWiki 2.5.0 < 7.3.1

SemanticMediaWiki 7.3.1

References

https://github.com/SemanticMediaWiki/SemanticMediaWiki/se...
vendor-advisory
https://www.vulncheck.com/advisories/semantic-mediawiki-b...
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-pi
manus-use
.