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golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing

🗓️ 11 Aug 2026 12:15:06Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 7 Views

golang.org/x/net/idna accepts Punycode labels decoding to ASCII hostnames, bypassing hostname validation for privilege escalation.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.4aarch64opentelemetry-collector0.152.1-1.el9_4opentelemetry-collector-0.152.1-1.el9_4.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64leopentelemetry-collector0.152.1-1.el9_4opentelemetry-collector-0.152.1-1.el9_4.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xopentelemetry-collector0.152.1-1.el9_4opentelemetry-collector-0.152.1-1.el9_4.s390x.rpm
Red Hat Enterprise Linux9.4x86_64opentelemetry-collector0.152.1-1.el9_4opentelemetry-collector-0.152.1-1.el9_4.x86_64.rpm

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28 Aug 2026 09:00Current
8.3High risk
Vulners AI Score8.3
CVSS 3.19.6
EPSS0.00692
SSVC
7