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Not in CISA KEV
MEDIUM severity

CVE-2008-7264 — pyftpdlib

MEDIUM

CVE-2008-7264 is a medium-severity (CVSS 4.3) Improper Input Validation vulnerability in pyftpdlib. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for pyftpdlib — see the affected versions and patch details below.

Improper input validation in pyftpdlib

Also known asPYSEC-2010-6
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 3, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs72th percentile — riskier than 72% of all scored CVEsHighest risk
0.31%0.83%1.35%1.88%0.8%1.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍pyftpdlib

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

The ftp_QUIT function in ftpserver.py in pyftpdlib before 0.5.0 allows remote authenticated users to cause a denial of service (file descriptor exhaustion and daemon outage) by sending a QUIT command during a disallowed data-transfer attempt.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIpyftpdliball versions0.5.0pip install --upgrade 'pyftpdlib==0.5.0'

Affected Products

1 product · 5 configurations
Application
pyftpdlibg.rodola
≤ 0.4.0
4 versions
0.10.1.10.2.00.3.0
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

The ftp_QUIT function in ftpserver.py in pyftpdlib before 0.5.0 allows r…

code.google.comNVDOct 2010

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for pyftpdlib, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update pyftpdlib to 0.5.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2008-7264 is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

The ftp_QUIT function in ftpserver.py in pyftpdlib before 0.5.0 allows remote authenticated users to cause a denial of service (file descriptor exhaustion and daemon outage) by sending a QUIT command during a disallowed data-transfer attempt.
O3 Security · Impact-Aware SCA

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CVE-2008-7264: pyftpdlib DoS — Fixed in 0.5.0