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Fencer Vulns
medium 6.5

CVE-2007-6740 json

pyftpdlib vulnerable to allocation of resources without limits

published 2010-10-19 16 y ago modified 2026-06-16 4 mo ago also GHSA-cx59-cp6c-9fr8 , PYSEC-2010-24 , EUVD-2010-0020

cvss
6.5
version 3.1, GitHub
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

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.

Patch / fix

  • pypi pyftpdlib 0.2.0

Exploit prediction

1.75% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:N/A:P
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
pypi pyftpdlib
<0.2.0
0.2.0

Classification

Weakness
  • CWE-264 Permissions, Privileges, and Access Controls
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.