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CVE-2026-91107criticalCWE-639

openSIS Classic 9.3 - Insecure Direct Object Reference (IDOR)

25Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.3
exploitation probability
—
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Affected products
OS4ED · openSIS-Classic