CVE-2026-84989: CWE-862: Missing Authorization in ntop ntopng
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 v3.1
Score 7.1high
Affected software
ntop
ntopng
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
ntopng, a web-based network traffic monitoring application, has a missing authorization vulnerability (CWE-862) in versions 6.7.0 through 6.7.260717. Specifically, the REST v2 endpoints POST /lua/rest/v2/delete/tag/tag.lua and POST /lua/rest/v2/edit/tag/tag.lua do not perform any authorization checks. This allows any authenticated user, including unprivileged accounts, to delete or rename any tag, including those created by administrators. The vulnerability is addressed in version 6.7.260718.
Potential Impact
An attacker with any authenticated user account can delete or rename tags in the ntopng system without proper authorization. This could disrupt tag-based organization or monitoring workflows, potentially impacting administrative operations. There is no direct confidentiality impact, but integrity is affected. Availability impact is low.
Mitigation Recommendations
Upgrade ntopng to version 6.7.260718 or later, which contains a fix for this missing authorization vulnerability. Until the upgrade is applied, restrict access to trusted users only and monitor for unauthorized tag modifications.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-09-02T18:12:13.534Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9989c8acd9273b49126a0b
Added to database: 09/03/2026, 14:52:56 UTC
Last enriched: 09/07/2026, 13:06:47 UTC
Last updated: 10/17/2026, 18:48:23 UTC
Views: 75
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