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crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building

🗓️ 29 Jul 2026 22:29:37Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 18 Views

Go crypto/x509 and crypto/tls have a DoS flaw that overwhelms chain building with intermediates.

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OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9.4aarch64go-toolset1.25.9-1.el9_4go-toolset-1.25.9-1.el9_4.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64lego-toolset1.25.9-1.el9_4go-toolset-1.25.9-1.el9_4.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xgo-toolset1.25.9-1.el9_4go-toolset-1.25.9-1.el9_4.s390x.rpm
Red Hat Enterprise Linux9.4x86_64go-toolset1.25.9-1.el9_4go-toolset-1.25.9-1.el9_4.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64golang1.25.9-1.el9_4golang-1.25.9-1.el9_4.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64legolang1.25.9-1.el9_4golang-1.25.9-1.el9_4.ppc64le.rpm
Red Hat Enterprise Linux9.4s390xgolang1.25.9-1.el9_4golang-1.25.9-1.el9_4.s390x.rpm
Red Hat Enterprise Linux9.4x86_64golang1.25.9-1.el9_4golang-1.25.9-1.el9_4.x86_64.rpm
Red Hat Enterprise Linux9.4aarch64golang-bin1.25.9-1.el9_4golang-bin-1.25.9-1.el9_4.aarch64.rpm
Red Hat Enterprise Linux9.4ppc64legolang-bin1.25.9-1.el9_4golang-bin-1.25.9-1.el9_4.ppc64le.rpm
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10 Sep 2026 17:05Current
7High risk
Vulners AI Score7
CVSS 3.17.5
EPSS0.00615
SSVC
18