User enumeration in authentication mechanisms
Description
The ability to enumerate users was possible without relevant permissions due to different exception messages depending on whether the user existed or not.
Resolution
We now ensure that a generic message is returned whether the user exists or not if the password is invalid or if the user does not exist.
The patch for this issue is available here for branch 2.10.x and 2.x.
Credits
I would like to thank James Isaac and Mathias Brodala for reporting the issue and Robin Chalas for fixing the issue.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | lexik/jwt-authentication-bundle | < 2.10.7, >= 2.11.0, < 2.11.3 | 2.10.7, 2.11.3 |
References
- Weakness (CWE)
CWE-200- Platform
- Composer
- Package
lexik/jwt-authentication-bundle- Disclosed
- 17.05.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-2frx-j9hj-6c65 - CC BY 4.0
Vulnerability history: lexik/jwt-authentication-bundle
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 05.2021 05.2021
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 1
- Low 1
Disclosures per year
- 2021: 2
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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User enumeration in authentication mechanisms this entry
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