SEPTEMBER 16, 2026
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Case File

CVE-2023-54397

HIGH · CVSS 7.5 EPSS 0.37% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-15 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

Tornado versions prior to 6.3.3 are vulnerable to an HTTP request smuggling flaw caused by improper parsing of Content-Length headers, allowing attackers to inject crafted requests that can bypass proxy validation. This vulnerability poses a high risk, as it can enable unauthorized access and manipulation of web traffic when Tornado is deployed behind susceptible proxies. Organizations using Tornado should prioritize patching to mitigate potential exploitation.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2023-54397
Severity
HIGH
CVSS
7.5
EPSS
0.37%

Original NVD Description

Tornado before 6.3.3 contains an HTTP request smuggling vulnerability due to improper parsing of Content-Length headers accepting non-standard characters. Attackers can send crafted HTTP requests with these characters to bypass proxy validation and smuggle requests when deployed behind certain proxies.