cvedb.io
CVE-2026-40562
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2026-05-06T13:16:09.110 · Last modified 2026-06-17T10:45:27.267

Summary

Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Gazelle incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.

Affected products

kazeburo — gazelle

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.