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Critical · 9.3 CVE-2026-91107 EUVD-2026-92806GHSA-r588-8qfc-26mv

openSIS Classic 9.3 - Insecure Direct Object Reference (IDOR)

Published Oct 5, 2026 · Updated Oct 6, 2026 · Assigned by Fluid Attacks

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.

Affected products

VendorProductAffectedFixed
OS4ED openSIS-Classic 9.3 —

References