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EEF-CVE-2026-42790 nameConstraints DNS bypass via subject CommonName fallback in public_key hostname verification

🗓️ 27 May 2026 15:09:01Reported by GoogleType 
osv
 osv🔗 osv.dev👁 6 Views

DNS nameConstraints bypass via CommonName fallback in TLS verification for SAN-less certificates.

Related
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
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28 May 2026 04:39Current
5.8Medium risk
Vulners AI Score5.8
CVSS 47.6
EPSS0.00231
name constraintscommon nametls hostname verificationabsent subject alt namecertificate validationdns bypass
6