Improper Certificate Validation Affecting go-fdo-client package, versions <0:1.0.0-4.el10_2.7


Severity

Recommended
0.0
high
0
10

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.34% (26th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ALMALINUX10-GOFDOCLIENT-19635905
  • published6 Sept 2026
  • disclosed22 Sept 2026

Introduced: 6 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-client to version 0:1.0.0-4.el10_2.7 or higher.
This issue was patched in ALSA-2026:62577.

NVD Description

Note: Versions mentioned in the description apply only to the upstream go-fdo-client package and not the go-fdo-client 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