CVE-2024-14029
Published:September 15, 2026
Updated:September 22, 2026
Tornado before 6.4.1 ignores duplicate Transfer-Encoding: chunked headers, treating requests as having no message body and parsing the chunked body as a subsequent request. Attackers can exploit this inconsistency when Tornado is deployed behind proxies to perform HTTP request smuggling, enabling access control bypass, cache poisoning, or connection desynchronization.
Affected Packages
tornado (CONDA):
Affected version(s) >=4.0.1 <6.4.1Fix Suggestion:
Update to version 6.4.1https://github.com/tornadoweb/tornado.git (GITHUB):
Affected version(s) >=v4.0.0b1 <v6.4.1Fix Suggestion:
Update to version v6.4.1tornado (PYTHON):
Affected version(s) >=4.0 <6.4.1Fix Suggestion:
Update to version 6.4.1Related Resources (2)
Do you need more information?
Contact UsCVSS v4
Base Score:
9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
HIGH
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
EPSS
Base Score:
0.35