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rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion)

🗓️ 11 Nov 2025 19:52:06Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 2 Views

Rack suffers a denial of service due to unbounded preamble buffering in the multipart parser before its first boundary, enabling memory exhaustion and crash.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux10.1noarchcockpit-ha-cluster0.12.1-1.el10_1.1cockpit-ha-cluster-0.12.1-1.el10_1.1.noarch.rpm
Red Hat Enterprise Linux10.1aarch64pcs0.12.1-1.el10_1.1pcs-0.12.1-1.el10_1.1.aarch64.rpm
Red Hat Enterprise Linux10.1ppc64lepcs0.12.1-1.el10_1.1pcs-0.12.1-1.el10_1.1.ppc64le.rpm
Red Hat Enterprise Linux10.1s390xpcs0.12.1-1.el10_1.1pcs-0.12.1-1.el10_1.1.s390x.rpm
Red Hat Enterprise Linux10.1x86_64pcs0.12.1-1.el10_1.1pcs-0.12.1-1.el10_1.1.x86_64.rpm
Red Hat Enterprise Linux10.1aarch64pcs-snmp0.12.1-1.el10_1.1pcs-snmp-0.12.1-1.el10_1.1.aarch64.rpm
Red Hat Enterprise Linux10.1ppc64lepcs-snmp0.12.1-1.el10_1.1pcs-snmp-0.12.1-1.el10_1.1.ppc64le.rpm
Red Hat Enterprise Linux10.1s390xpcs-snmp0.12.1-1.el10_1.1pcs-snmp-0.12.1-1.el10_1.1.s390x.rpm
Red Hat Enterprise Linux10.1x86_64pcs-snmp0.12.1-1.el10_1.1pcs-snmp-0.12.1-1.el10_1.1.x86_64.rpm

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11 Jul 2026 20:00Current
6.8Medium risk
Vulners AI Score6.8
CVSS 3.17.5
EPSS0.00868
SSVC
2