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CVE-2026-44435

7.5 high SSVC exploitation: none Analyzed
NVD · CVE.org

Quicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server. Prior to commit 937d0e9, an assertion failure is raised when the total number of valid handshake messages received over a CRYPTO stream of a single packet number space exceeds 32KB, causing a Denial of Service. This issue has been fixed by commit 937d0e9.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · h2oNVD modified 2026-10-24 20:10

Affected (CPE criteria) 1

  • cpe:2.3:a:h2o:quicly:*:*:*:*:*:*:*:*

References 2