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CVE-2026-8720 HMAC-BLAKE2 final discards message when key length exceeds block size

🗓️ 25 Jun 2026 21:18:29Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

CVE-2026-8720: HMAC-BLAKE2 final discards message when key exceeds block size, yielding key-only MAC.

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16 Jul 2026 03:48Current
6.1Medium risk
Vulners AI Score6.1
CVSS 45.9
4