Improper Certificate Validation Affecting go-fdo-server package, versions <0:1.0.1-2.el10_2.4


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.34% (26th percentile)

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  • Snyk IDSNYK-ALMALINUX10-GOFDOSERVER-19526591
  • published4 Sept 2026
  • disclosed22 Sept 2026

Introduced: 4 Sep 2026

CVE-2026-33810  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 go-fdo-server to version 0:1.0.1-2.el10_2.4 or higher.
This issue was patched in ALSA-2026:62578.

NVD Description

Note: Versions mentioned in the description apply only to the upstream go-fdo-server package and not the go-fdo-server package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 relevant fixed versions and status.

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.

References

CVSS Base Scores

version 3.1