CVE-2024-14029 Details
Description
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.
A vulnerability in Tornado versions prior to 6.4.1 allows HTTP request smuggling by improperly handling duplicate 'Transfer-Encoding: chunked' headers. Tornado ignores the headers, leading to requests being processed without a message body, while the chunked data is misinterpreted as a separate request. This flaw can be exploited when Tornado is behind a proxy that forwards such requests, potentially causing access control bypass, cache poisoning, or connection desynchronization.
Users can upgrade to Tornado version 6.4.1 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 15, 2026CISA-ADP
Assessed Sep 15, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g | CISA-ADP | AdvisoryExploitVendor |
| https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g | [email protected] | AdvisoryExploitVendor |
| https://www.vulncheck.com/advisories/tornado-before-6.4.1-http-request-smuggling-via-transfer-encoding | [email protected] | AdvisoryVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-444 | Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Tornado | <= 6.4.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 15, 2026 | CVE Modified | CISA-ADP |
| Sep 15, 2026 | New CVE Received | [email protected] |