CVE-2018-1000168

Name: CVE-2018-1000168
Creator: NVD / NIST
Published: 2018-05-08T15:29:00.207+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 10.78%

Last modified Jun 17, 2026

CVE-2018-1000168 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation CWE-20 vulnerability in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears to be exploitable via network client. EPSS estimates a 10.78% chance of exploitation in the next 30 days.

Description

nghttp2 version >= 1.10.0 and nghttp2 <= v1.31.0 contains an Improper Input Validation CWE-20 vulnerability in ALTSVC frame handling that can result in segmentation fault leading to denial of service. This attack appears to be exploitable via network client. This vulnerability appears to have been fixed in >= 1.31.1.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

10.78%

95.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nghttp2	Nghttp2	>= 1.10.0, <= 1.31.0
Nodejs	Node.Js	>= 6.0.0, <= 6.8.1
Nodejs	Node.Js	>= 8.4.0, <= 8.17.0
Nodejs	Node.Js	>= 9.0.0, <= 9.11.2
Nodejs	Node.Js	>= 10.0.0, < 10.4.1
Debian	Debian Linux	9.0

References

http://www.securityfocus.com/bid/103952Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0366Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0367Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00011.htmlMailing List, Third Party Advisory
https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/Vendor Advisory
https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/Release Notes, Third Party Advisory
http://www.securityfocus.com/bid/103952Broken Link, Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0366Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:0367Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00011.htmlMailing List, Third Party Advisory
https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/Vendor Advisory
https://nodejs.org/en/blog/vulnerability/june-2018-security-releases/Release Notes, Third Party Advisory

Timeline

Published: May 8, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1000168?

How severe is CVE-2018-1000168?

CVE-2018-1000168 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 10.78% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1000168?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-1000168?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST