Vulnerability · Published May 24, 2022 · Assigned by mitre

CVE-2022-29361

Critical 9.8

In plain English

A critical-severity security flaw in the py3-werkzeug package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 8.1% (higher than 95% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)9.8Critical

Exploit odds (30 days)8.1%top 5.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack tooling1Public PoC

Official 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

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Alpine:v3.20	py3-werkzeug	2.2.2-r0	ALPINE-CVE-2022-29361
Alpine:v3.21	py3-werkzeug	2.2.2-r0	ALPINE-CVE-2022-29361
Alpine:v3.22	py3-werkzeug	2.2.2-r0	ALPINE-CVE-2022-29361
Alpine:v3.23	py3-werkzeug	2.2.2-r0	ALPINE-CVE-2022-29361
Alpine:v3.24	py3-werkzeug	2.2.2-r0	ALPINE-CVE-2022-29361
PyPI	werkzeug	2.1.1	PYSEC-2022-203

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/pallets/werkzeug/commit/9a3a981d70d2e9ec3344b5192f86fcaf3210cd85 x_refsource_MISC
https://github.com/pallets/werkzeug/issues/2420 x_refsource_MISC