Quick answers
- Is CVE-2026-100878 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-100878 being exploited in the wild.
- How severe is CVE-2026-100878?
- Medium severity, with a CVSS score of 6.3, published 27 September 2026.
- Which products and versions are affected?
- Zhistaredu StarTraining up to 3.8.1.
- Is there a fix for CVE-2026-100878?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-100878 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-100878?
- Check whether you run Zhistaredu StarTraining at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The SysUser.isAdmin() method incorrectly returns true for any non-null userId instead of validating actual admin privileges, causing the checkUserDataScope() authorization check to fail. The PUT /system/user/authRole endpoint lacks proper authorization enforcement (@PreAuthorize annotation) and allows any authenticated user to modify role assignments for arbitrary user IDs. An authenticated attacker can reassign themselves or other users to administrative roles, achieving privilege escalation.
Affected products
- zhistaredu StarTraining up to 3.8.1
Timeline
- 2026-09-27: disclosed: Vulnerability publicly disclosed; vendor did not respond to early disclosure