CVE-2026-75458
Authenticated teacher can delete admin via teacher API, enabling vertical privilege escalation.
Is CVE-2026-75458 being exploited?
Not confirmed. CVE-2026-75458 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.26% probability of exploitation in the next 30 days.
How severe is CVE-2026-75458?
CVE-2026-75458 is rated High. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-75458?
Yes. A fix has been recorded for CVE-2026-75458. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-75458 affect?
CVE-2026-75458 affects XueZhiSi Open Source Exam System <= 3.9.0, Web API: POST /api/teacher/user/delete/{id}. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-75458?
Upgrade XueZhiSi to patched version (>3.9.0) or apply commit; restrict teacher privileges and audit accounts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated teacher (role=2) can delete administrator accounts (role=3) via POST /api/teacher/user/delete/{id}, enabling admin account removal and operational disruption.
Immediate action required