CVE-2026-79957 ServiceNext Insecure Direct Object Reference via GetUsarios
Authenticated users can access other users' profiles and cleartext passwords via IDOR, enabling account takeover.
- 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-2026-79957?
CVE-2026-79957 is a high-severity missing authorization vulnerability in ServiceNext SerTec, published on 14 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ServiceNext contains an insecure direct object reference (IDOR) in the /api/Usuario/GetUsuarios endpoint, which accepts a user-controlled numeric ID in the request body without verifying that the authenticated token belongs to the requested account (CWE-639). Any authenticated user can iterate the ID parameter to retrieve the full profile record of every other user, including passwords stored in cleartext (CWE-256), enabling account takeover and credential-stuffing attacks.
Weakness: CWE-639
Which versions are affected by CVE-2026-79957?
How do I fix CVE-2026-79957?
No fix has been published for CVE-2026-79957 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-2026-79957 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-79957 exists.
Sources
Also known as GHSA-5323-vmxx-hx7x.