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Description

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

PUBLISHED Reserved 2026-04-07 | Published 2026-05-07 | Updated 2026-05-08 | Assigner Go

Problem types

CWE-248: Uncaught Exception

Product status

Default status
unaffected

Any version before 1.25.10
affected

1.26.0-0 (semver) before 1.26.3
affected

References

go.dev/issue/79006

groups.google.com/g/golang-announce/c/qcCIEXso47M

go.dev/cl/775320

pkg.go.dev/vuln/GO-2026-4971

cve.org (CVE-2026-39836)

nvd.nist.gov (CVE-2026-39836)

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