CVE-2013-1629: Improper Input Validation in pip
Summary
CVE-2013-1629: Improper Input Validation in pip. Affects pip versions < 1.3. Fixed in 1.3. How to fix ↓
Also tracked for
- python-pip · Debian:11
The same CVE-2013-1629 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.
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Background
pip is a package management system used to install and manage software packages written in Python. It is the standard package manager for the Python programming language. Pip allows users to easily install, upgrade, and remove Python packages from the PyPI repository. However, prior to version 1.3, pip used HTTP to retrieve packages from PyPI and did not perform integrity checks on package contents.
Vulnerability Detail
The vulnerability (CVE-2013-1629) in pip arises from the lack of proper input validation during the 'pip install' operation. This allows man-in-the-middle attackers to execute arbitrary code by crafting a malicious response to the installation request. As pip did not perform integrity checks on package contents, an attacker could tamper with the package during transit and inject malicious code. This vulnerability poses a moderate risk as it can lead to the execution of arbitrary code on the target system.
How To Fix
Latest published version: 26.2.2 as of 22 Oct 2026
pip install --upgrade "pip==26.2.2"Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
1.3
This is the first release that contains the fix.
pip install --upgrade "pip==1.3"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by ensuring they are using an updated version of pip (1.3 or later) that performs integrity checks on package contents.
Conclusion
In conclusion, the vulnerability (CVE-2013-1629) in pip allows man-in-the-middle attackers to execute arbitrary code by tampering with package contents during transit. To mitigate this risk, it is recommended to upgrade to pip version 1.3 or later, which performs integrity checks on package contents. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for pip →
FAQ
Pip is a package management system for Python that allows users to easily install, upgrade, and remove Python packages from the PyPI repository.
The vulnerability allows man-in-the-middle attackers to execute arbitrary code on the target system by tampering with package contents during transit.
To fix this vulnerability, upgrade to pip version 1.3 or later by running 'pip install --upgrade pip'.
While there is no specific workaround mentioned, users can mitigate the risk by using an updated version of pip that performs integrity checks on package contents.
The severity of this vulnerability is rated as MODERATE.
References
Related vulnerabilities
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