MEDIUM

CVE-2013-5123

CVSS v3

5.9

MEDIUM

EPSS Score

8.0 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

pipPyPIall versions · fixed in 1.5

Vendor advisories

CVE-2013-5123 Red Hat Product Security6 known affected
python-pip: insecure software download with mirroring support
python-virtualenv as a component of OpenShift Enterprise 1 · python-virtualenv as a component of Red Hat OpenShift Enterprise 2 · python27-python-pip as a component of Red Hat OpenShift Enterprise 2

Full record on NVD

Description

The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.

Technical details

Published: 2019-11-05
Exploit-DB: EDB-24086

Frequently asked questions

What is CVE-2013-5123?

The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.

Is CVE-2013-5123 actively exploited?

Active exploitation of CVE-2013-5123 has not been confirmed. Its EPSS score was 8.0% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2013-5123?

CVE-2013-5123 has a CVSS v3 base score of 5.9 (MEDIUM severity).

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