GO-2026-4971

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Source
https://pkg.go.dev/vuln/GO-2026-4971
Import Source
https://vuln.go.dev/ID/GO-2026-4971.json
JSON Data
https://api.osv.dev/v1/vulns/GO-2026-4971
Aliases
Related
Published
2026-05-07T19:21:40Z
Modified
2026-05-11T08:11:03.964539535Z
Summary
Panic in Dial and LookupPort when handling NUL byte on Windows in net
Details

The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).

Database specific 
{
    "url": "https://pkg.go.dev/vuln/GO-2026-4971",
    "review_status": "REVIEWED"
}
References

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
1.25.10
Introduced
1.26.0-0
Fixed
1.26.3

Ecosystem specific 

{
    "imports": [
        {
            "symbols": [
                "Dial",
                "DialTimeout",
                "Dialer.Dial",
                "Dialer.DialContext",
                "Listen",
                "ListenConfig.Listen",
                "ListenConfig.ListenPacket",
                "ListenPacket",
                "LookupAddr",
                "LookupCNAME",
                "LookupHost",
                "LookupIP",
                "LookupMX",
                "LookupNS",
                "LookupPort",
                "LookupSRV",
                "LookupTXT",
                "ResolveIPAddr",
                "ResolveTCPAddr",
                "ResolveUDPAddr",
                "Resolver.LookupAddr",
                "Resolver.LookupCNAME",
                "Resolver.LookupHost",
                "Resolver.LookupIP",
                "Resolver.LookupIPAddr",
                "Resolver.LookupMX",
                "Resolver.LookupNS",
                "Resolver.LookupNetIP",
                "Resolver.LookupPort",
                "Resolver.LookupSRV",
                "Resolver.LookupTXT",
                "Resolver.lookupAddr",
                "Resolver.lookupMX",
                "Resolver.lookupNS",
                "Resolver.lookupPort",
                "Resolver.lookupSRV",
                "Resolver.lookupTXT"
            ],
            "path": "net"
        }
    ]
}

Database specific

source 
"https://vuln.go.dev/ID/GO-2026-4971.json"