Browse all 10 CVE security advisories affecting h2o. AI-powered Chinese analysis, POCs, and references for each vulnerability.
| CVE ID | Title | CVSS | Severity | Published |
|---|---|---|---|---|
| CVE-2025-61684 | Quicly has assertion failures — quiclyCWE-20 | 7.5 | High | 2026-01-19 |
| CVE-2024-45402 | Picotls double free — picotlsCWE-415 | 8.6 | High | 2024-10-11 |
| CVE-2024-45396 | Quicly assertion failures — quiclyCWE-617 | 7.5 | High | 2024-10-11 |
| CVE-2024-45403 | H2O assertion failure when HTTP/3 requests are cancelled — h2oCWE-617 | 3.7 | Low | 2024-10-11 |
| CVE-2024-45397 | H2O alllows bypassing address-based access control with 0-RTT — h2oCWE-284 | 5.9 | Medium | 2024-10-11 |
| CVE-2024-25622 | H2O ignores headers configuration directives — h2oCWE-670 | 3.1 | Low | 2024-10-11 |
| CVE-2023-50247 | h2o QUIC state exhaustion DoS — h2oCWE-770 | 3.7 | Low | 2023-12-12 |
| CVE-2023-41337 | h2o vulnerable to TLS session resumption misdirection — h2oCWE-347 | 6.1 | Medium | 2023-12-12 |
| CVE-2023-30847 | H2O vulnerable to read from uninitialized pointer in the reverse proxy handler — h2oCWE-824 | 8.2 | High | 2023-04-27 |
| CVE-2021-43848 | Unititialized memory access in h2o — h2oCWE-908 | 7.4 | High | 2022-02-01 |
This page lists every published CVE security advisory associated with h2o. Each entry links to a detailed page with CVSS scoring, CWE classification, affected products and references. AI-generated Chinese analysis is provided for fast triage.