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cowboy: Cowboy: Denial of Service via HTTP/1.1 duplicate header names

🗓️ 28 Jul 2026 19:26:54Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 2 Views

Cowboy DoS via HTTP/1.1 duplicate header names; bypasses max_headers, exhausts Erlang VM memory.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64rabbitmq-server4.34.3.4-0.2.hum1rabbitmq-server4.3-4.3.4-0.2.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64rabbitmq-server4.34.3.4-0.2.hum1rabbitmq-server4.3-4.3.4-0.2.hum1.x86_64.rpm

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28 Jul 2026 22:49Current
5.9Medium risk
Vulners AI Score5.9
CVSS 46.9
SSVC
2