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CVE-2026-18040 HQC leaks private key information through secret-indexed GF(2^8) tables and a secret-dependent fixed-weight sampler

🗓️ 03 Oct 2026 08:55:06Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 5 Views

Side-channel leaks in Bouncy Castle for Java HQC private key via cache and timing.

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06 Oct 2026 02:30Current
5.9Medium risk
Vulners AI Score5.9
CVSS 45.9
5