CVE-2022-41717
Excessive memory growth in net/http and golang.org/x/net/http2
- Published
- Dec 8, 2022
- Updated
- Feb 13, 2025
- Assigning CNA
- Go
- Evidence observed
- Aug 8, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LLow · next 30 days
- Percentile
- 92.8%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.
Sources
1- h2conn-exploitExploit
Exploit for CVE-2022-41717 targeting HTTP/2 connection handling vulnerability in Go servers, enabling denial-of-service via rapid stream resets.
Responsible use
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