CVE-2024-14029
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.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 9
- CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/SA:N
- EPSS probability
- 0.35%
- CWE
- CWE-444
- Published
- 2026-09-15
- Last modified
- 2026-09-15
Affected products
- tornadoweb tornado
- tornadoweb tornado
Weakness type
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