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CVE-2026-8720

🗓️ 25 Jun 2026 21:18:29Reported by wolfSSLType 
cve
 cve
🔗 web.nvd.nist.gov👁 7 Views

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

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Affected
Refs
ReporterTitlePublishedViews
Family
Cvelist
CVE-2026-8720 HMAC-BLAKE2 final discards message when key length exceeds block size
25 Jun 202621:18
cvelist
EUVD
EUVD-2026-39579
25 Jun 202621:18
euvd
NVD
CVE-2026-8720
25 Jun 202622:17
nvd
[
  {
    "vendor": "wolfSSL",
    "product": "wolfSSL",
    "collectionURL": "https://github.com/wolfSSL/wolfssl",
    "versions": [
      {
        "status": "affected",
        "version": "5.9.0",
        "lessThanOrEqual": "5.9.1",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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25 Jun 2026 22:17Current
5.9Medium risk
Vulners AI Score5.9
CVSS 45.9
7