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Vulnerability record · CVE-2019-20916 · published 4 September 2020

CVE-2019-20916: Pypa pip path traversal vulnerability

Pypa · Pip

The pip package before 19.2 for Python allows Directory Traversal when a URL is given in an install command, because a Content-Disposition header can have ../ in a filename, as demonstrated by overwriting the /root/.ssh/authorized_keys file. This occurs in _download_http_url in _internal/download.py.

7.5 CVSS 3.1 High EPSS 3.0% · top 13.0% CWE-22 · Path traversal
7.5CVSS 3.1 base score, v2 5.0
3.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
16References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The pip package before 19.2 for Python allows Directory Traversal when a URL is given in an install command, because a Content-Disposition header can have ../ in a filename, as demonstrated by overwriting the /root/.ssh/authorized_keys file. This occurs in _download_http_url in _internal/download.py.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00005.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00010.html Mailing ListThird Party Advisory
https://github.com/gzpan123/pip/commit/a4c735b14a62f9cb864533808ac63936704f2ace Patch
https://github.com/pypa/pip/compare/19.1.1...19.2 Patch
https://github.com/pypa/pip/issues/6413 ExploitPatch
https://lists.debian.org/debian-lts-announce/2020/09/msg00010.html Mailing ListThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00005.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00010.html Mailing ListThird Party Advisory
https://github.com/gzpan123/pip/commit/a4c735b14a62f9cb864533808ac63936704f2ace Patch
https://github.com/pypa/pip/compare/19.1.1...19.2 Patch
https://github.com/pypa/pip/issues/6413 ExploitPatch
https://lists.debian.org/debian-lts-announce/2020/09/msg00010.html Mailing ListThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-20916), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.