CVE-2016-4864

HighCVSS 7.5/10Last modified Jun 17, 2026

Description

H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi, mruby, proxy, redirect or reproxy.

Metrics

CVSS 3.0 7.5/10CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-134

Affected software

No affected versions have been published.

Timeline

Published
May 12, 2017
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2016

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CVE-2016-4864: High severity, CVSS 7.5 | Vulnix