Auth bypass in Os4ed Opensis-Classic

CVE-2026-91107

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

Published · last modified .

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References