GO-2026-6609

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Source

https://pkg.go.dev/vuln/GO-2026-6609

Import Source

https://vuln.go.dev/ID/GO-2026-6609.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-6609

Aliases

CVE-2026-78667

Published

2026-10-08T22:31:09Z

Modified

2026-10-08T22:45:08Z

Summary

Lack of limit on size of parsed Range headers in net/http

Details

When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU.

Database specific

{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-6609"
}

References

Credits

- Jakub Ciolek (https://ciolek.dev)

Affected packages

Go / stdlib

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.26.9

Introduced

1.27.0-0

Fixed

1.27.2

Ecosystem specific

{
    "imports": [
        {
            "path": "net/http",
            "symbols": [
                "ServeContent",
                "ServeFile",
                "ServeFileFS",
                "fileHandler.ServeHTTP",
                "fileTransport.RoundTrip",
                "parseRange"
            ]
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-6609.json"