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High ALSA-2026:57126 1 CVE

Important: yggdrasil security update

Published Aug 19, 2026 · Updated Oct 29, 2026

Summary

yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child "worker" process, exchanging data with its worker processes through a D-Bus message broker.

Security Fix(es):

* crypto/x509: golang: Go crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 2

ReleasePackageFixed in
AlmaLinux · 10 yggdrasil 0.4.9.2-1.el10_2.2
AlmaLinux · 10 yggdrasil-devel 0.4.9.2-1.el10_2.2

Vulnerabilities 1

  • High 7.5

    Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509

    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, issu…

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-33810
  • report
    https://bugzilla.redhat.com/2456335
  • advisory
    https://errata.almalinux.org/10/ALSA-2026-57126.html