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Vulnerability record · CVE-2022-0391 · published 9 February 2022

CVE-2022-0391: Python injection vulnerability

Python · Python

A flaw was found in Python, specifically within the urllib.parse module. This module helps break Uniform Resource Locator (URL) strings into components. The issue involves how the urlparse method does not sanitize input and allows characters like '\r' and '\n' in the URL path. This flaw allows an attacker to input a crafted URL, leading to injection attacks. This flaw affects Python versions prior to 3.10.0b1, 3.9.5, 3.8.11, 3.7.11 and 3.6.14.

7.5 CVSS 3.1 High EPSS 8.3% · top 5.2% CWE-74 · Injection
7.5CVSS 3.1 base score, v2 5.0
8.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
10Affected product versions listed by NVD
16References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A flaw was found in Python, specifically within the urllib.parse module. This module helps break Uniform Resource Locator (URL) strings into components. The issue involves how the urlparse method does not sanitize input and allows characters like '\r' and '\n' in the URL path. This flaw allows an attacker to input a crafted URL, leading to injection attacks. This flaw affects Python versions prior to 3.10.0b1, 3.9.5, 3.8.11, 3.7.11 and 3.6.14.

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

Affected products

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

References

LinkTags
https://bugs.python.org/issue43882 ExploitIssue TrackingPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSD2YBXP3ZF44E44QMIIAR5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UDBDBAU6HUPZHISBOARTXZ5
https://security.gentoo.org/glsa/202305-02
https://security.netapp.com/advisory/ntap-20220225-0009/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory
https://bugs.python.org/issue43882 ExploitIssue TrackingPatchVendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
https://lists.debian.org/debian-lts-announce/2024/11/msg00024.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSD2YBXP3ZF44E44QMIIAR5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UDBDBAU6HUPZHISBOARTXZ5
https://security.gentoo.org/glsa/202305-02
https://security.netapp.com/advisory/ntap-20220225-0009/ Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html PatchThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2022-0391), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.