Symlink Attack Affecting std/cmd/go package, versions <1.25.10>=1.26.0-0 <1.26.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-GOLANG-STDCMDGO-16535173
- published8 May 2026
- disclosed7 May 2026
- creditHarshit Gupta
Introduced: 7 May 2026
CVE-2026-39819 (opens in a new tab)How to fix?
Upgrade std/cmd/go to version 1.25.10, 1.26.3 or higher.
Overview
Affected versions of this package are vulnerable to Symlink Attack.
Go Vulnerability Report:
The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.