🛡️ CVE-2023-30847
🟠 CVSS 8.2 — High ✅ No Known Exploit CWE-824 NVD
8.2
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

H2O is an HTTP server. In versions 2.3.0-beta2 and prior, when the reverse proxy handler tries to processes a certain type of invalid HTTP request, it tries to build an upstream URL by reading from uninitialized pointer. This behavior can lead to crashes or leak of information to back end HTTP servers. Pull request number 3229 fixes the issue. The pull request has been merged to the `master` branch in commit f010336. Users should upgrade to commit f010336 or later.

Details

Severity HIGH
CVSS Score 8.2
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE CWE-824
Public Exploit ✅ No
Source NVD
Published 2023-04-27
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
h2o

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