CVE-2026-91107CWE-639

CVE-2026-91107

published October 6, 2026

CVSS
9.3
EPSS
0%
Percentile
14.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.3 · NONE
CVSS v4.0
9.3 · 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
EPSS
0.00238 · 14.0th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-10-06T02:16Z
References (3)
https://fluidattacks.com/advisories/hearts · [email protected]https://github.com/OS4ED/openSIS-Classic · [email protected]https://github.com/OS4ED/openSIS-Classic/commit/24bb530391a67c114cd4fe3dff65da7e070f5ed1 · [email protected]
EPSS history
Timeline
  • 07 OCT 03:43Z
    EPSS moved — → 0%
    epss
  • 05 OCT 21:29Z
    openSIS Classic 9.3 - Insecure Direct Object Reference (IDOR)
    cvelistv5