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.
History

Wed, 06 May 2026 17:30:00 +0000

Type Values Removed Values Added
References

Wed, 06 May 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 06 May 2026 13:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence
Weaknesses CWE-444
References

cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-05-06T16:32:45.619Z

Reserved: 2026-04-14T11:35:53.644Z

Link: CVE-2026-40562

cve-icon Vulnrichment

Updated: 2026-05-06T16:32:45.619Z

cve-icon NVD

Status : Received

Published: 2026-05-06T13:16:09.110

Modified: 2026-05-06T17:16:23.147

Link: CVE-2026-40562

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-06T16:45:07Z