CVE-2021-39409
A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an...
A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an administrator without needing to be authenticated.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an administrator without needing to be authenticated.
- Record
CVE-2021-39409- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an administrator without needing to be authenticated.
- Record
CVE-2021-39409- Updated
- 2026-11-02
EUVDEUVD-2021-25768 No score
A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an administrator without needing to be authenticated.
- Record
EUVD-2021-25768- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-m35m-7rw2-qh2x
A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an...
A vulnerability exists in Online Student Rate System v1.0 that allows any user to register as an administrator without needing to be authenticated.
- Record
GHSA-m35m-7rw2-qh2x- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-732
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | StefanDorresteijn/CVE-2021-39409 | 2021-08-17 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-39409 is a critical vulnerability (CVSS 9.8) in Online Student Rate System Project Student Rate System, published June 24, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.78%, the 86th percentile. No source names a fixed version.