CVE-2016-4864

7.5 HIGH

Published: May 12, 2017 Modified: May 13, 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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/h2o/h2o/issues/1077

Source: vultures@jpcert.or.jp

Patch Third Party Advisory

https://jvn.jp/en/jp/JVN94779084/index.html

Source: vultures@jpcert.or.jp

Third Party Advisory VDB Entry

https://github.com/h2o/h2o/issues/1077

Source: af854a3a-2127-422b-91ae-364da2661108

Patch Third Party Advisory

https://jvn.jp/en/jp/JVN94779084/index.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory VDB Entry

4 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.5 / 10.0

EPSS (Exploit Probability)

1.8%

76th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-134

Affected Vendors

dena

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