CVE-2026-84989
Received Received - Intake

Cross-Site Request Forgery in ntopng

Publication date: 2026-09-03

Last updated on: 2026-09-03

Assigner: GitHub, Inc.

Description
ntopng is a web-based network traffic monitoring application. In versions 6.7.0 through 6.7.260717, two REST v2 endpoints that manage ntopng's tag/badge feature — `POST /lua/rest/v2/delete/tag/tag.lua` and `POST /lua/rest/v2/edit/tag/tag.lua` — perform no authorization check at all. Any authenticated user, including a non-administrator ("unprivileged") account, can delete or rename any tag in the system, including tags created by an administrator. Version 6.7.260718 contains a fix.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-03
Last Modified
2026-09-03
Generated
2026-09-03
AI Q&A
2026-09-03
EPSS Evaluated
N/A
NVD
CVE-2026-84989
EUVD
EUVD-2026-70502

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
ntop ntopng From 6.7.0 (inc) to 6.7.260717 (inc)
ntop ntopng 6.7.260718

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This vulnerability affects ntopng versions 6.7.0 through 6.7.260717. Two REST API endpoints for managing tags lack authorization checks, allowing any authenticated user to delete or rename tags, including those created by administrators.

Detection Guidance

Check if your ntopng version is between 6.7.0 and 6.7.260717. Inspect REST API logs for unauthorized POST requests to /lua/rest/v2/delete/tag/tag.lua or /lua/rest/v2/edit/tag/tag.lua from non-admin users. Use curl to test endpoints: curl -X POST http://<ntopng-ip>/lua/rest/v2/delete/tag/tag.lua -d '{"tag_id":"1"}' with a non-admin session cookie.

Impact Analysis

An attacker with even a low-privilege account could delete or rename tags, disrupting network monitoring features like host classification, alert rules, or dashboards that depend on tags.

Mitigation Strategies

Upgrade ntopng to version 6.7.260718 or later immediately. If upgrading is not possible, restrict access to the vulnerable endpoints via network firewall rules or reverse proxy configurations. Review and remove any unauthorized tag modifications in the Redis ntopng.prefs.tags hash.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-84989. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart