CVE-2022-29361

Name: CVE-2022-29361
Creator: NVD / NIST
Published: 2022-05-25T01:15:07.277+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 7.66%

Last modified Jun 17, 2026

CVE-2022-29361 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Improper parsing of HTTP requests in Pallets Werkzeug v2.1.0 and below allows attackers to perform HTTP Request Smuggling using a crafted HTTP request with multiple requests included inside the body. NOTE: the vendor's position is that this behavior can only occur in unsupported configurations involving development mode and an HTTP server from outside the Werkzeug project. EPSS estimates a 7.66% chance of exploitation in the next 30 days.

Description

Improper parsing of HTTP requests in Pallets Werkzeug v2.1.0 and below allows attackers to perform HTTP Request Smuggling using a crafted HTTP request with multiple requests included inside the body. NOTE: the vendor's position is that this behavior can only occur in unsupported configurations involving development mode and an HTTP server from outside the Werkzeug project

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

7.66%

93.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-444

Affected Software

Vendor	Product	Versions
Palletsprojects	Werkzeug	<= 2.1.0

References

https://github.com/pallets/werkzeug/commit/9a3a981d70d2e9ec3344b5192f86fcaf3210cd85Patch, Third Party Advisory
https://github.com/pallets/werkzeug/issues/2420Issue Tracking, Third Party Advisory
https://github.com/pallets/werkzeug/commit/9a3a981d70d2e9ec3344b5192f86fcaf3210cd85Patch, Third Party Advisory
https://github.com/pallets/werkzeug/issues/2420Issue Tracking, Third Party Advisory

Timeline

Published: May 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-29361?

How severe is CVE-2022-29361?

CVE-2022-29361 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 7.66% probability of exploitation in the next 30 days.

How do I fix CVE-2022-29361?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-29361?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST