CVE-2024-14029

CVSS 9.0 (critical) · published 2026-09-15

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.

Weakness: CWE-444

Source: NVD CVE-2024-14029

References

• https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g
• https://www.vulncheck.com/advisories/tornado-before-6.4.1-http-request-smuggling-via-transfer-encoding
• https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g

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