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WS-2023-0296

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Date: August 19, 2025

Tornado vulnerable to HTTP request smuggling via improper parsing of `Content-Length` fields and chunk lengths

Language: Python

Severity Score

Related Resources (4)

https://github.com/tornadoweb/tornado/commit/b7a5dd29bb02950303ae96055082c12a1ea0a4fe
https://github.com/tornadoweb/tornado
https://github.com/tornadoweb/tornado/security/advisories/GHSA-qppv-j76h-2rpx
https://www.mend.io/vulnerability-database/WS-2023-0296

Severity Score

Weakness Type (CWE)

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CWE-444

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): LOW

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