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golang.org/net/http: Lack of limit when parsing cookies can cause memory exhaustion in net/http

🗓️ 09 Apr 2026 11:00:43Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 2 Views

Golang net/http allows unlimited cookies, causing memory DoS despite a 1MB header limit.

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Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64golang1.261.26.2-1.hum1golang1.26-1.26.2-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64golang1.261.26.2-1.hum1golang1.26-1.26.2-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanynoarchgolang1.26-docs1.26.2-1.hum1golang1.26-docs-1.26.2-1.hum1.noarch.rpm

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17 Jul 2026 09:23Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.15.3
EPSS0.00534
SSVC
cookie parsingunlimited cookiesmemory exhaustiondenial of serviceone megabyte headergolang net http
2