All vulnerabilities
CVE-2024-6827
Gunicorn HTTP Request/Response Smuggling vulnerability
Description
Gunicorn version 21.2.0 does not properly validate the value of the 'Transfer-Encoding' header as specified in the RFC standards, which leads to the default fallback method of 'Content-Length,' making it vulnerable to TE.CL request smuggling. This vulnerability can lead to cache poisoning, data exposure, session manipulation, SSRF, XSS, DoS, data integrity compromise, security bypass, information leakage, and business logic abuse.
Patch Available
Fix available through Seal Security.
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Fix without upgrading
Score
7.5
Severity
High
Ecosystem
Python
Publish Date
March 20, 2025
Modified Date
February 3, 2026
Score Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Versions

