OCTOBER 6, 2026
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Case File

CVE-2026-91107

CRITICAL · CVSS 9.3 Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-10-05 · Last synced 2026-10-06

CyberRota Analysis

AI-Generated

An authenticated user with the built-in teacher role in openSIS Classic 9.3 can exploit a vulnerability to reset the password of any staff account by manipulating the staff_id parameter. This critical flaw poses a significant risk as it could lead to unauthorized access and potential compromise of sensitive information within the school information system. Educational institutions using this software should prioritize remediation to safeguard against potential breaches.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-91107
Severity
CRITICAL
CVSS
9.3
EPSS
N/A

Original NVD 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.