{"id":"CVE-2024-14029","title":"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","summary":"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 deploye…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N","cwe":["CWE-444"],"vendor":"tornadoweb","product":"tornado","affected":["tornado < 6.4.1"],"patched":["tornado 6.4.1"],"published":"2026-09-15","updated":"2026-09-28","sourceUpdated":"2026-09-28T14:10:00.213","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-14029","references":[{"url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/tornado-before-6.4.1-http-request-smuggling-via-transfer-encoding","label":"disclosure@vulncheck.com"},{"url":"https://github.com/tornadoweb/tornado/security/advisories/GHSA-753j-mpmx-qq6g","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/tornadoweb/tornado/commit/d65f6e71a77f53a1ff0a0dc55704be13f04eb572"},{"url":"https://github.com/tornadoweb/tornado"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-14029.json"},{"url":"https://access.redhat.com/security/cve/CVE-2024-14029"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533918"},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-14029"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-14029"},{"url":"https://access.redhat.com/errata/RHSA-2024:10836"},{"url":"https://access.redhat.com/errata/RHSA-2024:10843"},{"url":"https://access.redhat.com/errata/RHSA-2024:10590"},{"url":"https://access.redhat.com/errata/RHSA-2025:3108"},{"url":"https://access.redhat.com/errata/RHSA-2025:2470"},{"url":"https://access.redhat.com/errata/RHSA-2025:2471"},{"url":"https://access.redhat.com/errata/RHSA-2026:84798"},{"url":"https://access.redhat.com/errata/RHSA-2026:84843"},{"url":"https://access.redhat.com/errata/RHSA-2026:84844"}],"tags":["nvd","cve.org","exploit-available","osv","pip","csaf","vex","red-hat","score-dispute"],"epss":0.00361,"epssPercentile":0.2973,"aliases":["GHSA-753j-mpmx-qq6g"],"ecosystem":"pip","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-15T17:07:58.664131Z"},"scores":{"nvd":7.5,"osv":5.3,"vendor":7.5},"ingestedAt":"2026-09-15T15:39:12.928Z","slug":"CVE-2024-14029","body":"## Overview\n\nTornado 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2024-14029)\n\nAffected packages:\n\n- `tornado < 6.4.1`\n\nPatched in:\n\n- `tornado 6.4.1`\n\nSource: https://osv.dev/vulnerability/GHSA-753j-mpmx-qq6g\n\n## Vendor advisories\n\n- **RHSA-2024:10836** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.2) · released 2024-12-05 · [advisory](https://access.redhat.com/errata/RHSA-2024:10836)\n- **RHSA-2024:10843** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v.9.4) · released 2024-12-05 · [advisory](https://access.redhat.com/errata/RHSA-2024:10843)\n- **RHSA-2024:10590** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2024-12-02 · [advisory](https://access.redhat.com/errata/RHSA-2024:10590)\n- **RHSA-2025:3108** · Red Hat · fixed in: Red Hat Enterprise Linux High Availability EUS (v.9.2), Red Hat Enterprise Linux Resilient Storage EUS (v.9.2) · released 2025-03-24 · [advisory](https://access.redhat.com/errata/RHSA-2025:3108)\n- **RHSA-2025:2470** · Red Hat · fixed in: Red Hat Enterprise Linux High Availability EUS (v.9.4), Red Hat Enterprise Linux Resilient Storage EUS (v.9.4) · released 2025-03-10 · [advisory](https://access.redhat.com/errata/RHSA-2025:2470)\n- **RHSA-2025:2471** · Red Hat · fixed in: Red Hat Enterprise Linux High Availability (v. 9), Red Hat Enterprise Linux Resilient Storage (v. 9) · released 2025-03-10 · [advisory](https://access.redhat.com/errata/RHSA-2025:2471)\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat OpenStack Platform 16.2 · no fix planned: Red Hat Enterprise Linux AI (RHEL AI) 3, Red Hat Enterprise Linux 7, Red Hat OpenStack Platform 16.2 · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-14029.json)\n- **RHSA-2026:84798** · Red Hat · fixed in: Red Hat Enterprise Linux HighAvailability (v. 8), Red Hat Enterprise Linux ResilientStorage (v. 8) · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84798)\n- **RHSA-2026:84843** · Red Hat · fixed in: Red Hat Enterprise Linux High Availability AUS (v.8.4), Red Hat Enterprise Linux HighAvailability EUS EXTENSION (v.8.4) · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84843)\n- **RHSA-2026:84844** · Red Hat · fixed in: Red Hat Enterprise Linux High Availability E4S (v.8.8), Red Hat Enterprise Linux High Availability TUS (v.8.8) · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84844)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":204358,"id":"CVE-2024-14029","ts":1789494100422,"field":"exploit_available","old":"false","new":"true"}]}