GHSA-fxg5-wq6x-vr4w
GitHub Security Advisory
golang.org/x/net/http2/h2c vulnerable to request smuggling attack
✓ GitHub Reviewed
HIGH
Has CVE
Advisory Details
A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.
### Specific Go Packages Affected
golang.org/x/net/http2/h2c
Affected Packages
Go
golang.org/x/net
Affected versions:
0.0.0-20220524220425-1d687d428aca
(fixed in 0.1.1-0.20221104162952-702349b0e862)
Related CVEs
Key Information
7.5
/10
Dataset
Last updated: July 18, 2025 6:27 AM
Data from GitHub Advisory Database. This information is provided for research and educational purposes.