gunicorn: Gunicorn version 21.2.0 does not properly validate the value of the 'Transfer-Encoding' header as specified in the RF...
CVE-2024-6827 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2024-6827, released March 20, 2025. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| gunicorn · Debian 13.5 (trixie) | 23.0.0-1 | DEBIAN-CVE-2024-6827 | Mar 20, 2025 |
| gunicorn · Debian 14 | 23.0.0-1 | DEBIAN-CVE-2024-6827 | Mar 20, 2025 |
| python-gunicorn · opensuse-leap 15.6 | 20.1.0-150400.12.9.1 | SUSE-SU-2025:1008-1 | Mar 25, 2025 |
| python-gunicorn · sles 15.6 | 20.1.0-150400.12.9.1 | SUSE-SU-2025:1008-1 | Mar 25, 2025 |
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