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JLSEC-2026-1142 Issue summary: When EVP_PKEY_derive_set_peer() is called with a DHX (X9.42) peer key, the peer...

🗓️ 03 Aug 2026 19:08:57Reported by GoogleType 
osv
 osv🔗 osv.dev👁 5 Views

EVP_PKEY_derive_set_peer with Diffie-Hellman X9.42 keys omits subgroup checks, enabling small-subgroup attack.

Related
Refs
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9 Jun 202616:03
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SourceLink
githubwww.github.com/advisories/GHSA-3cxm-476w-ghm2
githubwww.github.com/openssl/openssl/commit/3da5a516cd2635a320ff748503db2cef7c4b0f02
githubwww.github.com/openssl/openssl/commit/3ddbb7ab50bd93dfc59cbe08e269a67605aeebdb
githubwww.github.com/openssl/openssl/commit/5f452bba2c681423d8fcffd120a19b757ee42e3c
githubwww.github.com/openssl/openssl/commit/7fbfde7677ed8808828bf00ff01c937ca04bdda2
githubwww.github.com/openssl/openssl/commit/ca2237ab5615641b662183b077f62c08d75e8070
githubwww.github.com/openssl/security/commit/3da5a516cd2635a320ff748503db2cef7c4b0f02
githubwww.github.com/openssl/security/commit/3ddbb7ab50bd93dfc59cbe08e269a67605aeebdb
githubwww.github.com/openssl/security/commit/5f452bba2c681423d8fcffd120a19b757ee42e3c
githubwww.github.com/openssl/security/commit/7fbfde7677ed8808828bf00ff01c937ca04bdda2
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13 Aug 2026 13:00Current
7.1High risk
Vulners AI Score7.1
CVSS 3.13.7
EPSS0.00455
derive peer keydiffie hellman keyssubgroup checksmall subgroup attackfips modules affected
5