VDB
GHSA-fv83-x2xw-2j55
GHSA-fv83-x2xw-2j55
PUBLISHED
CVSS 7.5 HIGH
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Exploit Intelligence
- CVE-2026-33810.json (github-poc)
Timeline
- Apr 8, 2026 CVE Published
- Apr 10, 2026 Security Advisory
- Apr 20, 2026 CVE Updated
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-33810 advisory
- https://go.dev/cl/763763 url
- https://go.dev/issue/78332 url
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU url
- https://pkg.go.dev/vuln/GO-2026-4866 url
- http://www.openwall.com/lists/oss-security/2026/04/19/4 url
- http://www.openwall.com/lists/oss-security/2026/04/20/1 url