CVE-2016-4864

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CVSS 3.0

7.5 high

EPSS

2%p77

Published

May 12, 2017 (May 12, 2017)

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.

Vendors: dena
Products: h2o
Weakness: CWE-134
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.8%)

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