The ftp_STOU function in FTPServer.py in pyftpdlib before 0.2.0 does not limit the number…
Priority LOW 22CWE-264Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass, Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and GitHub. Impact type from CWE-264 and CWE-770.
Summary
The ftp_STOU function in FTPServer.py in pyftpdlib before 0.2.0 does not limit the number of attempts to discover a unique filename, which might allow remote authenticated users to cause a denial of service via a STOU command.
Why it matters now
EPSS 0.01748 77th percentileScored 2026-11-07
Fix Fixed pyftpdlib (PyPI): 0.2.0
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | pyftpdlib (PyPI) | before 0.2.0 | 0.2.0 | Patch available | GHSA-cx59-cp6c-9fr8 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- pyftpdlib (PyPI) Vendor— Affected before 0.2.0 Fixed in 0.2.0 Patch available GHSA-cx59-cp6c-9fr8
Remediation
- Fix · GHSA-cx59-cp6c-9fr8 pyftpdlib (PyPI) Fixed in 0.2.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2007-6740
- 2026-10-03 Alias added: GHSA-cx59-cp6c-9fr8
References
Advisory 2
Other 7
- http://code.google.com/p/pyftpdlib/source/diff?spec=svn37&r=37&format=side&path=/trunk/pyftpdlib/FTPServer.py
- http://code.google.com/p/pyftpdlib/source/browse/trunk/HISTORY
- http://code.google.com/p/pyftpdlib/source/detail?r=37
- http://code.google.com/p/pyftpdlib/issues/detail?id=25
- https://github.com/giampaolo/pyftpdlib/issues/25
- https://github.com/giampaolo/pyftpdlib
- https://github.com/pypa/advisory-database/tree/main/vulns/pyftpdlib/PYSEC-2010-24.yaml
More G.rodola Pyftpdlib vulnerabilities
- TI-2007-06431 FTPServer.py in pyftpdlib before 0.2.0 does not increment the attempted_logins count for… CVSS 2.0HIGH 7.5
- TI-2008-06949 ftpserver.py in pyftpdlib before 0.5.0 does not delay its response after receiving an… CVSS 2.0HIGH 7.5
- TI-2008-06948 Multiple directory traversal vulnerabilities in FTPServer.py in pyftpdlib before 0.3.0… CVSS 2.0MEDIUM 6.5
- TI-2007-06430 Multiple directory traversal vulnerabilities in FTPServer.py in pyftpdlib before 0.2.0… CVSS 2.0MEDIUM 6.5
- TI-2007-06435 The ftp_PORT function in FTPServer.py in pyftpdlib before 0.2.0 does not prevent TCP… CVSS 2.0MEDIUM 6.5
- TI-2007-06433 FTPServer.py in pyftpdlib before 0.2.0 allows remote attackers to cause a denial of service via a long command. CVSS 2.0MEDIUM 5.0
Sources
- CVE-2007-6740 · CVE Program
- CVE-2007-6740 · NVD
- FIRST EPSS
- GHSA-cx59-cp6c-9fr8 · GitHub Advisory Database · CC BY 4.0
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