Is CVE-2026-33810 actively exploited?

CVE-2026-33810 has no public evidence of in-the-wild exploitation as of 2026-04-17.

What is the CVSS score for CVE-2026-33810?

CVE-2026-33810 has a CVSS score of 8.2 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

How do I patch CVE-2026-33810?

Patch guidance is available from golang security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-33810.

Fix CVE-2026-33810 - HIGH golang go

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: low
Availability: none
Weaknesses: CWE-295

Metadata

Primary Vendor: GOLANG
Published: 4/8/2026
Last Modified: 4/17/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2026-33810

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary