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H2o

5 CVEs published in the last four months. Exploited flaws first.

Critical0
High5
Medium0
Exploited (KEV)0

All recent CVEs

CVECVSSSeverityProductSummaryPublished
CVE-2026-444357.5highquiclyQuicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server.85d ago
CVE-2026-444367.5highquiclyQuicly is an IETF QUIC protocol implementation intended primarily for use within the H2O HTTP server.85d ago
CVE-2026-444537.5highh2oh2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3.85d ago
CVE-2026-543407.5highh2oh2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3.85d ago
CVE-2026-87517.3highh2oA security flaw has been discovered in h2oai h2o-3 up to 7402.145d ago

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