Improper Neutralization of Null Byte or NUL Character Affecting std/os/exec package, versions <1.18.8>=1.19.0-0 <1.19.3
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-STDOSEXEC-14546536
- published6 Jan 2026
- disclosed1 Nov 2022
- creditRyotaK
Introduced: 1 Nov 2022
CVE-2022-41716 (opens in a new tab)How to fix?
Upgrade std/os/exec to version 1.18.8, 1.19.3 or higher.
Overview
std/os/exec is a Go standard library package std/os/exec
Affected versions of this package are vulnerable to Improper Neutralization of Null Byte or NUL Character.
Go Vulnerability Report:
Due to unsanitized NUL values, attackers may be able to maliciously set environment variables on Windows.In syscall.StartProcess and os/exec.Cmd``, invalid environment variable values containing NUL values are not properly checked for. A malicious environment variable value can exploit this behavior to set a value for a different environment variable. For example, the environment variable string "A=B\x00C=D"sets the variables"A=B" and "C=D"`.