GO-2026-4513

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Source

https://pkg.go.dev/vuln/GO-2026-4513

Import Source

https://vuln.go.dev/ID/GO-2026-4513.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-4513

Aliases

Related

CGA-xwfm-7hvm-p6pw

Published

2026-03-16T20:27:23Z

Modified

2026-05-29T02:29:18.915551189Z

Summary

Denial of service in github.com/shamaton/msgpack

Details

The msgpack decoder fails to properly validate the input buffer length when processing truncated fixext data (format codes 0xd4-0xd8). This can lead to an out-of-bounds read and a runtime panic, allowing a denial of service attack.

Database specific

{
    "url": "https://pkg.go.dev/vuln/GO-2026-4513",
    "review_status": "REVIEWED"
}

References

Affected packages

Go / github.com/shamaton/msgpack

Package

Name: github.com/shamaton/msgpack; View open source insights on deps.dev
Purl: pkg:golang/github.com/shamaton/msgpack

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Ecosystem specific

{
    "imports": [
        {
            "symbols": [
                "DecodeStructAsArray",
                "DecodeStructAsMap",
                "Unmarshal",
                "UnmarshalAsArray",
                "UnmarshalAsMap"
            ],
            "path": "github.com/shamaton/msgpack"
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-4513.json"

Go / github.com/shamaton/msgpack/v2

Package

Name: github.com/shamaton/msgpack/v2; View open source insights on deps.dev
Purl: pkg:golang/github.com/shamaton/msgpack/v2

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Ecosystem specific

{
    "imports": [
        {
            "symbols": [
                "Unmarshal",
                "UnmarshalAsArray",
                "UnmarshalAsMap"
            ],
            "path": "github.com/shamaton/msgpack/v2"
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-4513.json"

Go / github.com/shamaton/msgpack/v3

Package

Name: github.com/shamaton/msgpack/v3; View open source insights on deps.dev
Purl: pkg:golang/github.com/shamaton/msgpack/v3

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Ecosystem specific

{
    "imports": [
        {
            "symbols": [
                "Unmarshal",
                "UnmarshalAsArray",
                "UnmarshalAsMap"
            ],
            "path": "github.com/shamaton/msgpack/v3"
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-4513.json"