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Vulnerability record · CVE-2019-9674 · published 4 February 2020

CVE-2019-9674: Python uncontrolled resource consumption vulnerability

Python · Python

Lib/zipfile.py in Python through 3.7.2 allows remote attackers to cause a denial of service (resource consumption) via a ZIP bomb.

7.5 CVSS 3.1 High EPSS 5.5% · top 7.4% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score, v2 5.0
5.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

Lib/zipfile.py in Python through 3.7.2 allows remote attackers to cause a denial of service (resource consumption) via a ZIP bomb.

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00003.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html Broken Link
https://bugs.python.org/issue36260 Issue TrackingVendor Advisory
https://bugs.python.org/issue36462 Issue TrackingVendor Advisory
https://github.com/python/cpython/blob/master/Lib/zipfile.py Third Party Advisory
https://python-security.readthedocs.io/security.html#archives-and-zip-bomb Vendor Advisory
https://security.netapp.com/advisory/ntap-20200221-0003/ Third Party Advisory
https://usn.ubuntu.com/4428-1/ Third Party Advisory
https://www.python.org/news/security/ Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00003.html Broken Link
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html Broken Link
https://bugs.python.org/issue36260 Issue TrackingVendor Advisory
https://bugs.python.org/issue36462 Issue TrackingVendor Advisory
https://github.com/python/cpython/blob/master/Lib/zipfile.py Third Party Advisory
https://python-security.readthedocs.io/security.html#archives-and-zip-bomb Vendor Advisory
https://security.netapp.com/advisory/ntap-20200221-0003/ Third Party Advisory
https://usn.ubuntu.com/4428-1/ Third Party Advisory
https://www.python.org/news/security/ Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-9674), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.