CVE-2026-84989 ntopng's Missing Authorization in REST API Allows Non-Admin Users to Delete and Rename Arbitrary Tags
Non-admin users can delete or rename arbitrary tags in ntopng due to missing authorization checks in REST API endpoints.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-84989?
CVE-2026-84989 is a high-severity missing authorization vulnerability in ntopng, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-84989?
How do I fix CVE-2026-84989?
No fix has been published for CVE-2026-84989 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-84989 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84989 exists.
Sources
Also known as GHSA-43p9-5758-wwq8, UBUNTU-CVE-2026-84989.