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High RHSA-2026:51065 4 CVEs

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

Published Aug 7, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 1

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 buildah 2:1.45.0-2.hum1

Vulnerabilities 4

  • 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
  • High 7.2
    CVE-2026-75593

    BuildKit: Malicious client can bypass destination directory validation on local sources upload

    BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.2, a custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlle…

    moby BuildKit moby-engine Azure Linux
  • Medium 6.9
    CVE-2026-15789

    Malicious client can bypass destination directory validation on local sources upload

    A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentic…

    moby BuildKit
  • Medium 5.6
    CVE-2026-15788

    WCOW cache mount source selector resolves NTFS junctions outside of cache root

    BuildKit's cache mount source= selector on Windows Container on Windows (WCOW) workers does not detect NTFS directory junctions placed inside the cache root. A build authored by an untrusted user on a WCOW-configured BuildKit daemon can read arbitrary host fi…

    moby BuildKit

References

  • report
    https://access.redhat.com/security/cve/CVE-2026-15788
  • 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-2026-75593
  • report
    https://access.redhat.com/security/cve/CVE-2026-15789
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_51065.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2502989
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-15788
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-15788
  • article
    https://github.com/moby/buildkit/security/advisories/GHSA-388v-wmr2-g2v2
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2503742
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-15789
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-15789
  • article
    https://github.com/moby/buildkit/security/advisories/GHSA-g2h8-426c-7976
  • 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
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2519913
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-75593
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-75593
  • article
    https://github.com/moby/buildkit/releases/tag/v0.31.2