GO-2026-5038

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Source

https://pkg.go.dev/vuln/GO-2026-5038

Import Source

https://vuln.go.dev/ID/GO-2026-5038.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-5038

Aliases

CVE-2026-42504

Published

2026-06-02T21:39:47Z

Modified

2026-06-02T22:00:16.420988441Z

Summary

Quadratic complexity in WordDecoder.DecodeHeader in mime

Details

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

Database specific

{
    "url": "https://pkg.go.dev/vuln/GO-2026-5038",
    "review_status": "REVIEWED"
}

References

Credits

- p4p3r (https://hackerone.com/p4p3r_hak)

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

1.25.11

Introduced

1.26.0-0

Fixed

1.26.4

Ecosystem specific

{
    "imports": [
        {
            "symbols": [
                "WordDecoder.DecodeHeader"
            ],
            "path": "mime"
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-5038.json"