What’s Vulnerable › Vulnerabilities

CVE-2022-27664: golang.org/x/net/http2 Denial of Service vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-06 · updated 2026-06-17

Description

In net/http in Go before 1.18.6 and 1.19.x before 1.19.1, attackers can cause a denial of service because an HTTP/2 connection can hang during closing if shutdown were preempted by a fatal error.

Affected products

• Fedoraproject Fedora: 36, 37
• Go: before 1.18.6; 1.19.0 — fixed in 1.18.6
• Golang.Org/X/Net: before 0.0.0-20220906165146-f3363e06e74c — fixed in 0.0.0-20220906165146-f3363e06e74c
• Golang.Org/X/Net/Http2: before 0.0.0-20220906165146-f3363e06e74c — fixed in 0.0.0-20220906165146-f3363e06e74c
• Go Stdlib: before 1.18.6; from 1.19.0-0 before 1.19.1 — fixed in 1.18.6, 1.19.1

How to fix

Upgrade to a fixed version: Go 1.18.6; Golang.Org/X/Net 0.0.0-20220906165146-f3363e06e74c; Golang.Org/X/Net/Http2 0.0.0-20220906165146-f3363e06e74c; Go Stdlib 1.18.6, 1.19.1. Check the vendor advisory for mitigations.

References

• https://groups.google.com/g/golang-announce
• https://groups.google.com/g/golang-announce/c/x49AQzIVX-s
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXKTHIGE5F576MAPFYCIJXNRGBSPISUF/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXS2OQ57KZC5XZKK5UW4SYKPVQAHIOJX/
• https://security.gentoo.org/glsa/202209-26
• https://security.netapp.com/advisory/ntap-20220923-0004/
• https://groups.google.com/g/golang-announce
• https://groups.google.com/g/golang-announce/c/x49AQzIVX-s
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JXKTHIGE5F576MAPFYCIJXNRGBSPISUF/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXS2OQ57KZC5XZKK5UW4SYKPVQAHIOJX/
• https://security.gentoo.org/glsa/202209-26
• https://security.netapp.com/advisory/ntap-20220923-0004/

Get alerted when CVE-2022-27664 or the next vulnerability affects your stack