Description

When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.

INFO

Published Date :

2026-04-08T01:06:56.546Z

Last Modified :

2026-04-20T17:23:21.823Z

Source :

Go
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33810 vulnerability.

Vendors Products
Go Standard Library
  • Crypto/x509
Golang
  • Go
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33810.

URL Resource
https://go.dev/cl/763763 cve-icon cve-icon cve-icon
https://go.dev/issue/78332 cve-icon cve-icon cve-icon
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33810 cve-icon
https://pkg.go.dev/vuln/GO-2026-4866 cve-icon cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33810 cve-icon
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