CVE-2022-0391 [High] | Security Vulnerability in 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.

EDB-ID	Source	Kind	Published	Link
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#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-05-01	1.32%	1.21%	-0.11%
2	2026-03-04	1.92%	1.32%	-0.59%
3	2026-03-01	—	1.92%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-05-01

1.32%

1.21%

-0.11%

2026-03-04

1.92%

1.32%

-0.59%

2026-03-01

—

1.92%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:N) Service keeps running; no real outage angle.	3.9	3.6	[email protected]
7.5	3.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:H) They could widely tamper with or forge data—trust in the data is badly hurt. Availability (A:N) Service keeps running; no real outage angle.	3.9	3.6	134c704f-9b21-4f2e-91b3-4a467353bcc0
5.0	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:N/I:P/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	10.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

7.5

3.1

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N): Service keeps running; no real outage angle.

3.9

3.6

[email protected]

7.5

3.1

HIGH

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

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:H): They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N): Service keeps running; no real outage angle.

3.9

3.6

134c704f-9b21-4f2e-91b3-4a467353bcc0

5.0

2.0

MEDIUM

AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:N): No availability impact.

10.0

2.9

[email protected]

OS Trackers for CVE-2022-0391

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2022-0391 not yet assigned priority: Debian including 3 source packages (pypy3, python2.7, python3.9), 7 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7.	https://security-tracker.debian.org/tracker/CVE-2022-0391
`gentoo`	high	CVE-2022-0391: 1 GLSA(s) (202305-02), 2 atom(s) (dev-lang/python, dev-python/pypy3); latest impact high.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-0391
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2022-0391
`suse`	medium	—	https://www.suse.com/security/cve/CVE-2022-0391/
`ubuntu`	medium	CVE-2022-0391 medium priority: Ubuntu including 8 source packages (python2.7, python3.10, …), 112 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 83, released 13, needs-triage 7, ignored 4, not-affected 4, needed 1.	https://ubuntu.com/security/CVE-2022-0391

Affected software / configurations for CVE-2022-0391

Vendor	Product	Version	Raw CPE
python	python	< 3.6.14	cpe:2.3:a:python:python::::::::
python	python	>= 3.7.0, < 3.7.11	cpe:2.3:a:python:python::::::::
python	python	>= 3.8.0, < 3.8.11	cpe:2.3:a:python:python::::::::
python	python	>= 3.9.0, < 3.9.5	cpe:2.3:a:python:python::::::::
python	python	3.10.0	cpe:2.3:a:python:python:3.10.0:alpha1::::::
python	python	3.10.0	cpe:2.3:a:python:python:3.10.0:alpha2::::::
python	python	3.10.0	cpe:2.3:a:python:python:3.10.0:alpha3::::::
python	python	3.10.0	cpe:2.3:a:python:python:3.10.0:alpha4::::::
python	python	3.10.0	cpe:2.3:a:python:python:3.10.0:alpha5::::::
python	python	3.10.0	cpe:2.3:a:python:python:3.10.0:alpha6::::::
netapp	active_iq_unified_manager	—	cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vsphere::
netapp	hci	—	cpe:2.3:a:netapp:hci:-:::::::*
netapp	management_services_for_element_software	—	cpe:2.3:a:netapp:management_services_for_element_software:-:::::::*
netapp	ontap_select_deploy_administration_utility	—	cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:::::::*
netapp	solidfire\,_enterprise_sds_\&_hci_storage_node	—	cpe:2.3:a:netapp:solidfire\,_enterprise_sds_\&_hci_storage_node:-:::::::*
netapp	hci_compute_node	—	cpe:2.3:h:netapp:hci_compute_node:-:::::::*
fedoraproject	fedora	34	cpe:2.3:o:fedoraproject:fedora:34:::::::*
fedoraproject	fedora	35	cpe:2.3:o:fedoraproject:fedora:35:::::::*
oracle	http_server	12.2.1.3.0	cpe:2.3:a:oracle:http_server:12.2.1.3.0:::::::*
oracle	http_server	12.2.1.4.0	cpe:2.3:a:oracle:http_server:12.2.1.4.0:::::::*
oracle	zfs_storage_appliance_kit	8.8	cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:::::::*

References for CVE-2022-0391

URL	Tags
https://bugs.python.org/issue43882	Exploit Issue Tracking Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00022.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSD2YBXP3ZF44E44QMIIAR5VTO35KTRB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UDBDBAU6HUPZHISBOARTXZ5GKHF2VH5U/
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	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2024/11/msg00024.html
https://lists.debian.org/debian-lts-announce/2025/03/msg00013.html

URL

CVE-2022-0391

Public exploit references (Exploit-DB) for CVE-2022-0391

Exploit prediction scoring system (EPSS) score for CVE-2022-0391

Common vulnerability scoring system (CVSS) metrics for CVE-2022-0391

Weakness enumeration for CVE-2022-0391

OS Trackers for CVE-2022-0391

Affected software / configurations for CVE-2022-0391

References for CVE-2022-0391