CVE-2013-1633

6.8 MEDIUM 2% exploit odds Fix listed

What it is

easy_install in setuptools before 0.7 uses HTTP to retrieve packages from the PyPI repository, and does not perform integrity checks on package contents, which allows man-in-the-middle attackers to execute arbitrary code via a crafted response to the default use of the product.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 2.0% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2013-08-06 02:52 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:51 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 2.0% in the next 30 days (EPSS).
Severity: 6.8 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2013-08-06 02:52 UTC
Last modified: 2026-06-16 23:51 UTC
Exploit probability: 2.0% · EPSS, next 30 days
Weakness: CWE-20 · Improper input validation
Record status: Modified

Affected

Python Setuptools ≤ 0.7b4
Python Setuptools 0.6.40
Python Setuptools 0.6.41
Python Setuptools 0.6.42
Python Setuptools 0.6.43
Python Setuptools 0.6.44
Python Setuptools 0.6.45
Python Setuptools 0.6.46

Attack profile CVSS 2.0 · 6.8

Attack vector: Network
Complexity: Medium
Authentication: None
Confidentiality: Partial
Integrity: Partial
Availability: Partial

Raw vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2013-1633.md and follow it. Check whether this project is affected by CVE-2013-1633. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record