Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Fixed packages 1

Vulnerabilities 2

• High 7.5
  CVE-2026-56852 Public exploit

  Infinite loop on invalid input in golang.org/x/text

  A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

  golang.org/x/text golang.org/x/text/unicode/norm zot kubescape Debian Ubuntu Azure Linux Wolfi Go
  Jul 21, 2026
• Low 3.1
  CVE-2026-54787

  sigstore-go fails to check signature timestamps against a signing key's validity period

  sigstore-go is a Go library for Sigstore signing and verification. Prior to 1.2.1, sigstore-go does not check a bundle signing timestamp against the validity window of an ExpiringKey wrapping a self-managed long-lived signing key without a certificate, which …

  sigstore sigstore-go zot kubescape Debian Ubuntu Azure Linux Wolfi Go
  Jul 31, 2026

References

• report
  https://access.redhat.com/security/cve/CVE-2026-56852
• article
  https://access.redhat.com/security/updates/classification/
• article
  https://images.redhat.com/
• report
  https://access.redhat.com/security/cve/CVE-2026-54787
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_44451.json
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2509939
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-54787
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-54787
• article
  https://github.com/sigstore/sigstore-go/commit/4594ab4c779d08be1f4419803a8249188f35ed5f
• article
  https://github.com/sigstore/sigstore-go/pull/642
• article
  https://github.com/sigstore/sigstore-go/releases/tag/v1.2.1
• article
  https://github.com/sigstore/sigstore-go/security/advisories/GHSA-wqqc-jjcq-vfxm
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2504233
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-56852
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-56852
• article
  https://go.dev/cl/794100
• article
  https://go.dev/issue/80142
• advisory
  https://pkg.go.dev/vuln/GO-2026-5970