9.8

CVE-2022-29361: palletsprojects werkzeug HTTP Request/Response Smuggling

CVSS: 9.8v3.1CriticalModified
AliasesALPINE-CVE-2022-29361PYSEC-2022-203openSUSE-SU-2024:13098-1
Published 24-05-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2022-29361 is a critical (CVSS 9.8) HTTP Request/Response Smuggling vulnerability in palletsprojects werkzeug. EPSS estimates a 8.07% chance of exploitation in the next 30 days, higher than 94.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
8.07%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 24-05-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

8.07%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

0.00 pp

From 8.07% on 18-09-2026

18-09-202618-10-2026
EPSS score
8.07%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Alpine1 product
  • py3-werkzeug< 2.2.2-r0
Opensuse1 product
  • pgadmin4&distro=openSUSE Tumbleweed< 7.4-1.1
Palletsprojects1 product
PyPI1 product
  • werkzeug< 9a3a981d70d2e9ec3344b5192f86fcaf3210cd85 | < 2.1.1

4 vendors · 4 products

References

4 links