GO-2026-4342

See a problem?
Please try reporting it to the source first.
Source
https://pkg.go.dev/vuln/GO-2026-4342
Import Source
https://vuln.go.dev/ID/GO-2026-4342.json
JSON Data
https://api.osv.dev/v1/vulns/GO-2026-4342
Aliases
Published
2026-01-28T19:08:28Z
Modified
2026-01-31T09:26:09.805793Z
Summary
Excessive CPU consumption when building archive index in archive/zip
Details

archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive.

Database specific 
{
    "review_status": "REVIEWED",
    "url": "https://pkg.go.dev/vuln/GO-2026-4342"
}
References
Credits
    • 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
1.24.12
Introduced
1.25.0
Fixed
1.25.6

Ecosystem specific 

{
    "imports": [
        {
            "path": "archive/zip",
            "symbols": [
                "Reader.Open",
                "Reader.initFileList"
            ]
        }
    ]
}

Database specific

source

"https://vuln.go.dev/ID/GO-2026-4342.json"