High severity8.2NVD Advisory· Published Apr 8, 2026· Updated Apr 20, 2026
CVE-2026-33810
CVE-2026-33810
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.
Affected products
1Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
6- go.dev/cl/763763nvdPatch
- pkg.go.dev/vuln/GO-2026-4866nvdVendor Advisory
- go.dev/issue/78332nvdIssue Tracking
- groups.google.com/g/golang-announce/c/0uYbvbPZRWUnvdMailing ListRelease Notes
- www.openwall.com/lists/oss-security/2026/04/19/4nvd
- www.openwall.com/lists/oss-security/2026/04/20/1nvd
News mentions
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