h2o Summary
Latest vulnerabilities published by h2o
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ASN.1 Validation Flaw in Picotls TLS Library Affects Crypto Operations
CVE-2026-45271H2oPicotls5.5MEDIUMHTTP/2 State Amplification Vulnerability in H2O Server by H2O
CVE-2026-54340H2oH2o7.5HIGHDenial of Service Vulnerability in h2o HTTP Server
CVE-2026-44453H2oH2o7.5HIGHDenial-of-Service Vulnerability in H2O HTTP Server
CVE-2026-44452H2oH2o5.9MEDIUMDenial of Service Vulnerability in Quicly Implementation for H2O HTTP Server
CVE-2026-44436H2oQuicly7.5HIGHDenial of Service Vulnerability in H2O HTTP Server's Quicly Implementation
CVE-2026-44435H2oQuicly7.5HIGHStateless Reset Injection Vulnerability in Quicly Implementation for H2O HTTP Server
CVE-2026-44434H2oQuicly5.3MEDIUMDenial of Service Vulnerability in H2O HTTP Server's Quicly Implementation
CVE-2026-44433H2oQuicly5.3MEDIUMBuffer Overflow Vulnerability in h2o HTTP Server by h2o
CVE-2026-55213H2oH2o7.5HIGHDenial of Service Vulnerability in Quicly by H2O
CVE-2025-61684H2oQuicly7.5HIGHInsecure Direct Object Reference in Envasadora H2O Eireli Product
CVE-2025-52389Envasadora H2O Ei...Soda Cristal8.8HIGHDouble-free bug in Picotls TLS protocol library could lead to arbitrary code execution
CVE-2024-45402H2oPicotls9.8CRITICALQUIC Protocol Implementation Vulnerable to Denial-of-Service Attack
CVE-2024-45396H2oQuicly7.5HIGHh2o HTTP Server Vulnerability: Crash and DoS Exploit
CVE-2024-45403H2oH2o7.5HIGHHTTP Request Spoofing Vulnerability in h2o HTTP Server
CVE-2024-45397H2oH2o7.5HIGHH2O HTTP Server Vulnerability: Inheritance Confusion Causes Unexpected Header Modification
CVE-2024-25622H2oH2o4.3MEDIUMAttackers Can Use Crafted Iced Models to Execute Arbitrary Code on H2O Platform
CVE-2024-6960H2Oh2o vulnerable to TLS session resumption misdirection
CVE-2023-41337h2oh2o6.1MEDIUMh2o QUIC state exhaustion DoS
CVE-2023-50247h2oh2o3.7LOWH2O vulnerable to read from uninitialized pointer in the reverse proxy handler
CVE-2023-30847H2oH2o8.2HIGHUnititialized memory access in h2o
CVE-2021-43848H2oH2o👾🟡7.4HIGHMan-in-the-Middle Vulnerability in H2O Application for Android
CVE-2014-6905H2o Human Harmony...H2o Human Harmony Orga...