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.
Published: 2026-08-31
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 02 Sep 2026 07:15:00 +0000

Type Values Removed Values Added
Title Vertical Privilege Escalation via Teacher Deletion Endpoint

Wed, 02 Sep 2026 05:30:00 +0000

Type Values Removed Values Added
Title Vertical Privilege Escalation in XueZhiSi Teacher Delete User Endpoint
Weaknesses CWE-277
CWE-285

Tue, 01 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-639
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Xuezhisi
Xuezhisi open Source Exam System
Vendors & Products Xuezhisi
Xuezhisi open Source Exam System

Mon, 31 Aug 2026 22:15:00 +0000

Type Values Removed Values Added
Title Vertical Privilege Escalation in XueZhiSi Teacher Delete User Endpoint
Weaknesses CWE-277
CWE-285

Mon, 31 Aug 2026 20:30:00 +0000

Type Values Removed Values Added
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.
References

Subscriptions

Xuezhisi Open Source Exam System
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-01T14:44:57.796Z

Reserved: 2026-08-17T00:00:00.000Z

Link: CVE-2026-75458

cve-icon Vulnrichment

Updated: 2026-09-01T14:43:50.662Z

cve-icon NVD

Status : Deferred

Published: 2026-08-31T21:17:48.393

Modified: 2026-09-01T21:00:36.830

Link: CVE-2026-75458

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T07:00:13Z

Weaknesses