Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV N L N N U H L N 8.2 .0034 25.2 —
AFFECTED Product Versions Fixed crypto/x509 1.26.0-0 – —
TIMELINE Mar 23 Reserved by Go Apr 8 Published (CNA: Go) Aug 24 RESCORED — CVE-2026-33810 (Go standard library crypto/x509). CVSS 7.5 → 8.2 (NVD).
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.
| Date | Event | Detail |
|---|---|---|
| March 23, 2026 | Reserved | Reserved by Go |
| April 8, 2026 | Published | Published (CNA: Go) |
| August 24, 2026 | RESCORED | RESCORED — CVE-2026-33810 (Go standard library crypto/x509). CVSS 7.5 → 8.2 (NVD). |
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|---|---|---|---|
| Go standard library | crypto/x509 | — | 1.26.0-0 | — |
Authoritative record: CVE-2026-33810 at cve.org
Vendors: go standard library
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-33810 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
