GO-2026-4869

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Source

https://pkg.go.dev/vuln/GO-2026-4869

Import Source

https://vuln.go.dev/ID/GO-2026-4869.json

JSON Data

https://api.osv.dev/v1/vulns/GO-2026-4869

Aliases

CVE-2026-32288

Published

2026-04-07T22:53:49Z

Modified

2026-04-08T01:15:36.295226Z

Summary

Unbounded allocation for old GNU sparse in archive/tar

Details

tar.Reader can allocate an unbounded amount of memory when reading a maliciously-crafted archive containing a large number of sparse regions encoded in the "old GNU sparse map" format.

Database specific

{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-4869"
}

References

Credits

- Colin Walters (walters@verbum.org)
- Uuganbayar Lkhamsuren (https://github.com/uug4na)
- Jakub Ciolek

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

1.25.9

Introduced

1.26.0-0

Fixed

1.26.2

Ecosystem specific

{
    "imports": [
        {
            "path": "archive/tar",
            "symbols": [
                "Reader.Next",
                "Reader.readOldGNUSparseMap",
                "readGNUSparseMap1x0"
            ]
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-4869.json"