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undici: undici: Denial of Service via unhandled error in WebSocket permessage-deflate decompression

🗓️ 23 Sep 2026 17:59:20Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 8 Views

Unauthenticated DoS in undici via malformed DEFLATE byte in WebSocket permessage-deflate.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64nodejs2424.21.0-1.hum1nodejs24-24.21.0-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64nodejs2424.21.0-1.hum1nodejs24-24.21.0-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanynoarchnodejs24-bin24.21.0-1.hum1nodejs24-bin-24.21.0-1.hum1.noarch.rpm
Red Hat Hardened Imagesanyaarch64nodejs24-devel24.21.0-1.hum1nodejs24-devel-24.21.0-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64nodejs24-devel24.21.0-1.hum1nodejs24-devel-24.21.0-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanynoarchnodejs24-docs24.21.0-1.hum1nodejs24-docs-24.21.0-1.hum1.noarch.rpm
Red Hat Hardened Imagesanyaarch64nodejs24-full-i18n24.21.0-1.hum1nodejs24-full-i18n-24.21.0-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64nodejs24-full-i18n24.21.0-1.hum1nodejs24-full-i18n-24.21.0-1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64nodejs24-libs24.21.0-1.hum1nodejs24-libs-24.21.0-1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64nodejs24-libs24.21.0-1.hum1nodejs24-libs-24.21.0-1.hum1.x86_64.rpm
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02 Oct 2026 02:16Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.15.9
EPSS0.00412
SSVC
8