Vulnerability · Published Sep 3, 2026 · Assigned by GitHub_M
CVE-2026-84989ntopng's Missing Authorization in REST API Allows Non-Admin Users to Delete and Rename Arbitrary Tags
High 7.1
In plain English
A high-severity missing authorization in ntopng from ntop. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | ntopng | no fix listed | UBUNTU-CVE-2026-84989 |
| Ubuntu:24.04:LTS | ntopng | no fix listed | UBUNTU-CVE-2026-84989 |
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
References
- https://github.com/ntop/ntopng/security/advisories/GHSA-43p9-5758-wwq8 x_refsource_CONFIRM
- https://github.com/ntop/ntopng/commit/0e41f24b367fb9caf750459da67827326e3289e8 x_refsource_MISC