CVE-2026-116880
Received Received - Intake

Cross-Site Request Forgery in Semantic MediaWiki

Publication date: 2026-10-27

Last updated on: 2026-10-27

Assigner: VulnCheck

Description
Semantic MediaWiki from 3.0.0 before 7.3.1 contains a cross-site request forgery vulnerability in Special:SMWAdmin because it overwrites the wpEditToken with a freshly generated valid token. Attackers can lure an authenticated smw-admin user to a malicious page that triggers schema setup, entity-disposal, or job actions, causing semantic data loss and resource exhaustion.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-27
Last Modified
2026-10-27
Generated
2026-10-27
AI Q&A
2026-10-27
EPSS Evaluated
N/A
NVD
CVE-2026-116880
EUVD
EUVD-2026-110708

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
SemanticMediaWiki SemanticMediaWiki 3.0.0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-352 The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a Cross-Site Request Forgery (CSRF) vulnerability in Semantic MediaWiki versions 3.0.0 to 7.3.0. It affects the Special:SMWAdmin interface where the system overwrites an invalid or missing CSRF token with a freshly generated valid one. This bypasses token validation, allowing attackers to trick authenticated administrators into triggering unintended actions like schema setup, entity disposal, or job execution.

Detection Guidance

Detecting this vulnerability requires checking Semantic MediaWiki versions and monitoring for unusual administrative actions. Verify if your Semantic MediaWiki version is between 3.0.0 and 7.3.0. Check logs for unexpected schema updates, entity disposal, or job executions in Special:SMWAdmin.

Impact Analysis

Exploitation could lead to semantic data loss, unauthorized schema changes, entity disposal, or resource exhaustion. Attackers can perform destructive administrative actions without proper validation if the victim is an authenticated SMW administrator with relevant features enabled.

Mitigation Strategies
  • Upgrade Semantic MediaWiki to version 7.3.1 or later immediately to patch the vulnerability.
  • Review and restrict access to Special:SMWAdmin to only trusted administrators.
  • Monitor logs for unauthorized administrative actions or unusual data changes.
  • Ensure all administrative actions require valid CSRF tokens and enforce POST methods.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-116880. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart