Improper Certificate Validation Affecting std/crypto/x509 package, versions <1.13.13>=1.14.0-0 <1.14.5
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-STDCRYPTOX509-14545536
- published6 Jan 2026
- disclosed17 Feb 2022
- creditNiall Newman
Introduced: 17 Feb 2022
CVE-2020-14039 (opens in a new tab)How to fix?
Upgrade std/crypto/x509 to version 1.13.13, 1.14.5 or higher.
Overview
std/crypto/x509 is a Go standard library package std/crypto/x509
Affected versions of this package are vulnerable to Improper Certificate Validation.
Go Vulnerability Report:
On Windows, if VerifyOptions.Roots is nil, Certificate.Verify does not check the EKU requirements specified in VerifyOptions.KeyUsages. This may allow a certificate to be used for an unintended purpose.