CVE-2013-1629
Improper Input Validation in pip
pip before 1.3 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 a "pip install" operation.
Exploit likelihood
What each source reports
NVD Score used
pip before 1.3 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 a "pip install" operation.
- Record
CVE-2013-1629- CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
pip before 1.3 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 a "pip install" operation.
- Record
CVE-2013-1629- Updated
- 2026-11-02
EUVDEUVD-2013-0025 No score
pip before 1.3 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 a "pip install" operation.
- Record
EUVD-2013-0025- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g3p5-fjj9-h8gj
Improper Input Validation in pip
pip before 1.3 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 a "pip install" operation.
- Record
GHSA-g3p5-fjj9-h8gj- CVSS 4.0
- 7.3 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P - CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVGHSA-g3p5-fjj9-h8gj
Improper Input Validation in pip
pip before 1.3 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 a "pip install" operation.
- Record
GHSA-g3p5-fjj9-h8gj- CVSS 4.0
- 7.3 High
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P - CVSS 3.1
- 8.4 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV No score
pip before 1.3 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 a "pip install" operation.
- Record
CVE-2013-1629- Updated
- 2026-11-02
OSVDEBIAN-CVE-2013-1629 No score
pip before 1.3 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 a "pip install" operation.
- Record
DEBIAN-CVE-2013-1629- Updated
- 2026-11-02
OSVPYSEC-2013-8 No score
pip before 1.3 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 a "pip install" operation.
- Record
PYSEC-2013-8- Updated
- 2026-11-02
OSVUBUNTU-CVE-2013-1629 No score
pip before 1.3 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 a "pip install" operation.
- Record
UBUNTU-CVE-2013-1629- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pipPyPI |
before 1.3 | 1.3 |
python-pipDebian:12 |
before 1.3.1-1 | 1.3.1-1 |
python-pipDebian:13 |
before 1.3.1-1 | 1.3.1-1 |
python-pipDebian:14 |
before 1.3.1-1 | 1.3.1-1 |
python-virtualenvDebian:12 |
before 1.9.1-1 | 1.9.1-1 |
python-virtualenvDebian:13 |
before 1.9.1-1 | 1.9.1-1 |
python-virtualenvDebian:14 |
before 1.9.1-1 | 1.9.1-1 |
pipPyPI |
before 1.3, plus listed versions 0.20.2.10.30.3.10.4 Show 19 moreShow less0.50.5.10.60.6.10.6.20.6.30.70.7.10.7.20.80.8.10.8.20.8.31.01.0.11.0.21.11.21.2.1 |
1.3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-1629 is a medium vulnerability (CVSS 6.8) in Pypa Pip, published August 6, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 6.19%, the 93rd percentile. Fixed in pip 1.3.
References
pip-installer.org/en/latest/installing.html
github.com/pypa/pip/issues/425
bugzilla.redhat.com/show_bug.cgi?id=968059
reddit.com/r/Python/comments/17rfh7/warning_dont_use_pip_in_an_untrusted_network_a