Red Hat Security Advisory: OpenShift Container Platform 4.17.55 packages and security update

Fixed packages 43

Vulnerabilities 3

• Critical 9.1
  CVE-2026-33186 Public exploit

  gRPC-Go has an authorization bypass via missing leading slash in :path

  gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests …

  grpc grpc-go zot kubescape Debian Ubuntu Alpine Wolfi Go
  Mar 20, 2026
• High 7.5
  CVE-2026-25679

  Incorrect parsing of IPv6 host literals in net/url

  url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.

  Go standard library net/url langfuse-3-worker katib-suggestion-hyperopt Debian Ubuntu Azure Linux Alpine Wolfi Go
  Mar 6, 2026
• High 7.5
  CVE-2026-32280

  Unexpected work during chain building in crypto/x509

  During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 an…

  Go standard library crypto/x509 golang go Debian Ubuntu Azure Linux Alpine Wolfi Go
  Apr 8, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2445356
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2449833
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2456339
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_34097.json
• report
  https://access.redhat.com/security/cve/CVE-2026-25679
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-25679
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-25679
• article
  https://go.dev/cl/752180
• article
  https://go.dev/issue/77578
• article
  https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk
• advisory
  https://pkg.go.dev/vuln/GO-2026-4601
• report
  https://access.redhat.com/security/cve/CVE-2026-32280
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-32280
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-32280
• article
  https://go.dev/cl/758320
• article
  https://go.dev/issue/78282
• article
  https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
• advisory
  https://pkg.go.dev/vuln/GO-2026-4947
• report
  https://access.redhat.com/security/cve/CVE-2026-33186
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-33186
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-33186
• article
  https://github.com/grpc/grpc-go/security/advisories/GHSA-p77j-4mvh-x3m3