CVE-2026-44453

high

Description

h2o project reports: When serving static files, h2o can allocate a file path on the stack using alloca. On systems using musl libc, a large allocation can exceed the default pthread stack size and crash the server, causing a denial of service.

Details

Source: Mitre, NVD

Published: 2026-06-11

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

EPSS

EPSS: 0.00052