CVE-2026-91107: CWE-639 Authorization Bypass Through User-Controlled Key in OS4ED openSIS-Classic
Description
openSIS Classic 9.3 allows an authenticated user with the built-in teacher role can select an arbitrary staff record through staff_id and cause the School Information update path to reset that selected account's password.
CVSS v4.0
Score 9.3critical
Affected software
OS4ED
openSIS-Classic
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Fluid Attacks
- Date Reserved
- 2026-09-14T19:25:23.243Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac417c92cdf04f6563c40a0
Added to database: 10/05/2026, 21:34:01 UTC
Last updated: 10/05/2026, 21:34:01 UTC
Views: 1
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