CVE-2026-39819: Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go

Overview

Severity

Medium (CVSS 5.3)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

Exploit Status

Not Exploited

Patch Tuesday

2026-May

Released

2026-05-10

EPSS Score

0.01% (percentile: 0.4%)

Affected Products (2)

Other

• 21203-17084
• 21206-17084

Revision History

• 2026-05-10: Information published.