CVE-2026-91107— openSIS Classic 9.3 - Insecure Direct Object Reference (IDOR)
Quick assessment
Affected
OS4ED openSIS-Classic
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
在 openSIS Classic 9.3 版本中，具有内置教师角色的已认证用户可以通过指定 staff_id 选择任意职员记录，从而导致学校信息更新路径被触发，并重置所选账户的密码。
Possible ATT&CK Techniques 1 AI
T1136.001 · Local Account
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I. Basic Information for CVE-2026-91107
Vulnerability Information
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Vulnerability Title
openSIS Classic 9.3 - Insecure Direct Object Reference (IDOR)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OS4ED | openSIS-Classic | 9.3 | - |
|
II. Public POCs for CVE-2026-91107
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-91107 (2)
-
https://fluidattacks.com/advisories/hearts third-party-advisory
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V. Comments for CVE-2026-91107
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