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crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries

🗓️ 20 Jul 2026 16:01:12Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Golang crypto/x509 DoS via certs with many domain name entries during VerifyHostname.

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Red Hat Enterprise Linux9aarch64receptor1.6.6-1.el9apreceptor-1.6.6-1.el9ap.aarch64.rpm
Red Hat Enterprise Linux9x86_64receptor1.6.6-1.el9apreceptor-1.6.6-1.el9ap.x86_64.rpm
Red Hat Enterprise Linux10aarch64receptor1.6.6-1.el10apreceptor-1.6.6-1.el10ap.aarch64.rpm
Red Hat Enterprise Linux10x86_64receptor1.6.6-1.el10apreceptor-1.6.6-1.el10ap.x86_64.rpm

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22 Jul 2026 02:47Current
7.2High risk
Vulners AI Score7.2
CVSS 3.17.5
EPSS0.00939
SSVC
4