CVE-2013-1633

CVE-2013-1633 is a medium-severity vulnerability in Python Setuptools with a CVSS 2.0 base score of 6.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Description

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.

Frequently asked questions

What is CVE-2013-1633?
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.
How severe is CVE-2013-1633?
CVE-2013-1633 has a CVSS 2.0 base score of 6.8, rated medium severity.
Is CVE-2013-1633 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-1633?
CVE-2013-1633 primarily affects Python Setuptools. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-1633?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-1633 published?
CVE-2013-1633 was published on 2013-08-06 and last updated on 2026-06-16.

References

Affected products (11)

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