GO-2026-6089

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Source

https://pkg.go.dev/vuln/GO-2026-6089

Import Source

https://vuln.go.dev/ID/GO-2026-6089.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-6089

Aliases

CVE-2026-56853

Published

2026-08-13T21:43:54Z

Modified

2026-08-13T22:00:14.223454310Z

Summary

Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http

Details

When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this.

Database specific

{
    "url": "https://pkg.go.dev/vuln/GO-2026-6089",
    "review_status": "REVIEWED"
}

References

Affected packages

Go / stdlib

Package

Name: stdlib; View open source insights on deps.dev
Purl: pkg:golang/stdlib

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.25.13

Introduced

1.26.0-0

Fixed

1.26.6

Introduced

1.27.0-0

Fixed

1.27.0-rc.3

Ecosystem specific

{
    "imports": [
        {
            "symbols": [
                "ListenAndServe",
                "ListenAndServeTLS",
                "Serve",
                "ServeTLS",
                "Server.ListenAndServe",
                "Server.ListenAndServeTLS",
                "Server.Serve",
                "Server.ServeTLS",
                "conn.readRequest",
                "conn.serve"
            ],
            "path": "net/http"
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-6089.json"