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erlang: Erlang OTP public_key: Certificate validation bypass allows hostname spoofing

🗓️ 15 Jul 2026 09:55:47Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 1 Views

Erlang OTP public_key bypasses certificate validation with a crafted CommonName from a restricted CA, enabling hostname spoofing.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
FreeBSD		Erlang/OTP -- TLS hostname verification bypass via Subject CommonName fallback and name constraints
27 May 202600:00
–freebsd
ATTACKERKB		CVE-2026-42790
27 May 202615:09
–attackerkb
CBLMariner		CVE-2026-42790 affecting package erlang for versions less than 26.2.5.21-1
10 Jun 202602:46
–cbl_mariner
CNNVD		Erlang/OTP 安全漏洞
27 May 202600:00
–cnnvd
CVE		CVE-2026-42790
27 May 202615:09
–cve
Cvelist		CVE-2026-42790 nameConstraints DNS bypass via subject CommonName fallback in public_key hostname verification
27 May 202615:09
–cvelist
Debian CVE		CVE-2026-42790
27 May 202615:09
–debiancve
Tenable Nessus		Erlang/OTP 19.3 < 26.2.5.21 / 27.0 < 27.3.4.12 / 28.0 < 28.5.0.1 / 29.0 < 29.0.1 DNS nameConstraints Bypass (CVE-2026-42790)
29 May 202600:00
–nessus
Tenable Nessus		FreeBSD : Erlang/OTP -- TLS hostname verification bypass via Subject CommonName fallback and name constraints (93576148-5a54-11f1-b886-4c526214c986)
28 May 202600:00
–nessus
Tenable Nessus		openSUSE 16 Security Update : erlang (openSUSE-SU-2026:20907-1)
11 Jun 202600:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux9x86_64erlang-asn126.2.5.21-2.el9osterlang-asn1-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-asn1-debuginfo26.2.5.21-2.el9osterlang-asn1-debuginfo-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-compiler26.2.5.21-2.el9osterlang-compiler-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-crypto26.2.5.21-2.el9osterlang-crypto-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-crypto-debuginfo26.2.5.21-2.el9osterlang-crypto-debuginfo-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-debuginfo26.2.5.21-2.el9osterlang-debuginfo-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-debugsource26.2.5.21-2.el9osterlang-debugsource-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-eldap26.2.5.21-2.el9osterlang-eldap-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-erl_interface-debuginfo26.2.5.21-2.el9osterlang-erl_interface-debuginfo-26.2.5.21-2.el9ost.x86_64.rpm
Red Hat Enterprise Linux9x86_64erlang-erts26.2.5.21-2.el9osterlang-erts-26.2.5.21-2.el9ost.x86_64.rpm
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15 Jul 2026 12:49Current
6Medium risk
Vulners AI Score6
CVSS 3.17.4 - 8.1
CVSS 47.6
EPSS0.00338
SSVC
CWE-295
Erlang OTPcertificate validationhostname spoofingname constraintssubject alternative namecommon nametls clientman in the middlesecurity vulnerabilitydns restrictions
1