Issued:
2026-06-22
Updated:
2026-06-22

RHSA-2026:28047 - Important: Red Hat OpenStack Platform 17.1 etcd - security update

Synopsis

Important: Red Hat OpenStack Platform 17.1 (etcd) security update

Type/Severity

Security Advisory Important

Topic

An update for etcd is now available for Red Hat OpenStack Platform 17.1 (Wallaby).

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

etcd is a highly-available key value store for shared configuration.

Security Fix(es):

  • net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726)

  • golang: Denial of Service due to excessive resource consumption via crafted certificate (CVE-2025-61729)

  • Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)

  • Incorrect enforcement of email constraints in crypto/x509 (CVE-2026-27137)

  • crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)

  • golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283)

  • google.golang.org/grpc/authz: gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186)

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

  • crypto/tls: Incorrect certificate validation during TLS session resumption (CVE-2025-68121)

  • internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)

  • etcd: Authorization bypass allows information disclosure and denial of service (CVE-2026-33413)

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

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat OpenStack17.1x86_64

Updated Packages

  • etcd-debugsource-3.4.26-9.5.el9ost.x86_64.rpm
  • etcd-3.4.26-9.5.el9ost.src.rpm
  • etcd-debuginfo-3.4.26-9.5.el9ost.x86_64.rpm
  • etcd-3.4.26-9.5.el9ost.x86_64.rpm

Fixes

CVEs

References

Additional information