CVE-2023-31286
User account enumeration in Serenity
An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When a password reset request occurs, the server response leaks the existence of users. If one tries to reset a password of a non-existent user, an error message indicates that this user does not exist.
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
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When a password reset request occurs, the server response leaks the existence of users. If one tries to reset a password of a non-existent user, an error message indicates that this user does not exist.
- Record
CVE-2023-31286- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
CVE List
An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When a password reset request occurs, the server response leaks the existence of users. If one tries to reset a password of a non-existent user, an error message indicates that this user does not exist.
- Record
CVE-2023-31286- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
EUVDEUVD-2023-1404
An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When a password reset request occurs, the server response leaks the existence of users. If one tries to reset a password of a non-existent user, an error message indicates that this user does not exist.
- Record
EUVD-2023-1404- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w7jm-9x4m-8qc3
User account enumeration in Serenity
An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When a password reset request occurs, the server response leaks the existence of users. If one tries to reset a password of a non-existent user, an error message indicates that this user does not exist.
- Record
GHSA-w7jm-9x4m-8qc3- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
OSV
An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When a password reset request occurs, the server response leaks the existence of users. If one tries to reset a password of a non-existent user, an error message indicates that this user does not exist.
- Record
CVE-2023-31286- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-w7jm-9x4m-8qc3
User account enumeration in Serenity
An issue was discovered in Serenity Serene (and StartSharp) before 6.7.0. When a password reset request occurs, the server response leaks the existence of users. If one tries to reset a password of a non-existent user, an error message indicates that this user does not exist.
- Record
GHSA-w7jm-9x4m-8qc3- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-209
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
Serenity.Net.CoreNuGet |
before 6.7.0 | 6.7.0 |
Serenity.Net.WebNuGet |
before 6.7.0 | 6.7.0 |
Serenity.Net.CoreNuGet |
before 6.7.0, plus listed versions 5.0.05.0.15.0.105.0.115.0.12 Show 45 moreShow less5.0.135.0.175.0.185.0.195.0.25.0.205.0.215.0.225.0.235.0.245.0.255.0.265.0.275.0.285.0.295.0.35.0.305.0.315.0.325.0.335.0.345.0.355.0.365.0.375.0.385.0.395.0.45.0.405.0.415.0.425.0.435.0.445.0.455.0.465.0.475.0.485.0.495.0.55.0.505.0.515.0.65.0.75.0.85.0.95.1.0 |
6.7.0 |
Serenity.Net.WebNuGet |
before 6.7.0, plus listed versions 5.0.05.0.15.0.105.0.115.0.12 Show 45 moreShow less5.0.135.0.175.0.185.0.195.0.25.0.205.0.215.0.225.0.235.0.245.0.255.0.265.0.275.0.285.0.295.0.35.0.305.0.315.0.325.0.335.0.345.0.355.0.365.0.375.0.385.0.395.0.45.0.405.0.415.0.425.0.435.0.445.0.455.0.465.0.475.0.485.0.495.0.55.0.505.0.515.0.65.0.75.0.85.0.95.1.0 |
6.7.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-31286 is a medium vulnerability (CVSS 5.3) in Serenity Serene, published April 27, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.01%, the 63rd percentile. Fixed in Serenity.Net.Core 6.7.0.
References
github.com/serenity-is/Serenity/commit/11b9d267f840513d04b4f4d4876de7823a6e48d2
seclists.org/fulldisclosure/2023/May/14
packetstormsecurity.com/files/172648/Serenity-StartSharp-Software-File-Upload-XSS-User-Enumeration-Reusable-Tokens.html
nvd.nist.gov/vuln/detail/CVE-2023-31286
Left out here: 132 versions. The JSON record has them.