---
title: "CVE-2024-14029: Tornado - HTTP Request Smuggling"
description: "Tornado < 6.4.1 contains an HTTP request smuggling vulnerability caused by ignoring duplicate Transfer-Encoding: chunked headers, letting attackers perform request smuggling to bypass access control, poison cache, or desynchronize connections, exploit requires deployment behind proxies."
url: https://panop.io/threat-heartbeat/CVE-2024-14029/
---

# CVE-2024-14029 Tornado - HTTP Request Smuggling

Tornado < 6.4.1 contains an HTTP request smuggling vulnerability caused by ignoring duplicate Transfer-Encoding: chunked headers, letting attackers perform request smuggling to bypass access control, poison cache, or desynchronize connections, exploit requires deployment behind proxies.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.35% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2024-14029)

## Details

Type

HTTP Request Smuggling

Impact

Broken Access Control, Web Cache Poisoning, Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-444](https://cwe.mitre.org/data/definitions/444.html)

## Vendor fix

Upgrade to version 6.4.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2024-14029](https://nvd.nist.gov/vuln/detail/CVE-2024-14029)
- [https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g](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://www.vulncheck.com/advisories/tornado-before-6.4.1-http-request-smuggling-via-transfer-encoding)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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