CVE-2026-75458 Missing authorization in n/a
Authenticated teachers can delete administrator accounts due to missing authorization checks, enabling privilege escalation and data modification.
- 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-2026-75458?
CVE-2026-75458 is a high-severity missing authorization vulnerability in n/a, published on 31 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The teacher-end interface POST /api/teacher/user/delete/{id} in XueZhiSi Open Source Exam System <= 3.9.0 contains a vertical privilege escalatio vulnerability. This interface accepts a user ID and then executes getUserById(id), setDeleted(true), updateByIdFilter() in sequence, without any validation of whether the current user has the authority to delete the target user. An authenticated teacher user (role=2) can delete an administrator account (role=3), constituting a vertical privilege escalation where a lower-privileged user performs a high-privileged operation.
Weakness: CWE-639
Which versions are affected by CVE-2026-75458?
How do I fix CVE-2026-75458?
No fix has been published for CVE-2026-75458 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-2026-75458 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75458 exists.
Sources
Also known as GHSA-7898-m6ph-pvx5.