Improper Authentication in pyftpdlib
FTPServer.py in pyftpdlib before 0.2.0 does not increment the attempted_logins count for a USER command that specifies an invalid username, which makes it easier for remote attackers to obtain access via a brute-force attack.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | pyftpdlib | < 0.2.0 | 0.2.0 |
References
- http://code.google.com/p/pyftpdlib/issues/detail?id=20
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
- http://code.google.com/p/pyftpdlib/source/detail?r=23
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn23&r=23&format=side&path=/trunk/pyftpdlib/FTPServer.py
- https://github.com/advisories/GHSA-9x66-ghqx-8g5r
- https://nvd.nist.gov/vuln/detail/CVE-2007-6737
- https://github.com/giampaolo/pyftpdlib/issues/20
- https://github.com/giampaolo/pyftpdlib
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-21.yaml
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- Weakness (CWE)
CWE-287- Platform
- Python (PyPI)
- Package
pyftpdlib- Disclosed
- 19.10.2010
- Updated
- 11.10.2026 11:20
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2010-21 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-9x66-ghqx-8g5r - CC BY 4.0
Vulnerability history: pyftpdlib
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 14
- First → latest
- 10.2010 10.2010
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 5
- Medium 9
Disclosures per year
- 2017: 0
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
earlier: 14
-
Improper Authentication in pyftpdlib this entry
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