GO-2026-5841

See a problem?
Please try reporting it to the source first.

Source

https://pkg.go.dev/vuln/GO-2026-5841

Import Source

https://vuln.go.dev/ID/GO-2026-5841.json

JSON Data

https://api.test.osv.dev/v1/vulns/GO-2026-5841

Aliases

GHSA-259r-337f-4rfw

Downstream

CGA (3916)

MINI (894)

Published

2026-07-27T16:16:22Z

Modified

2026-07-27T17:00:15Z

Summary

OOB read in github.com/klauspost/compress/s2

Details

Providing a specially crafted dictionary to s2.NewDict and using it to encode data can make the encoder read out of bounds.

Database specific

{
    "review_status":  "REVIEWED",
    "url":  "https://pkg.go.dev/vuln/GO-2026-5841"
}

References

Affected packages

Go / github.com/klauspost/compress

Package

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

Affected ranges

Type: SEMVER
Events: Introduced

1.16.0

Fixed

1.18.7

Ecosystem specific

{
    "imports":  [
        {
            "path":  "github.com/klauspost/compress/s2",
            "symbols":  [
                "NewDict"
            ]
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-5841.json"