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Fencer Vulns
high 7.7

CVE-2026-75569 json

Mce-operator-bundle: all github actions pinned by mutable tag, not commit sha

published 2026-08-19 2 mo ago modified 2026-10-26 14 d ago also EUVD-2026-63086

cvss
7.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 48%
public exploits
0
none known

Summary

A flaw was found in mce-operator-bundle. The build process fetches and executes scripts from a remote repository without performing integrity checks, such as commit pinning or signature verification. This allows a malicious actor with write access to the remote repository to inject and execute arbitrary code during the build. The consequence is a compromised build process, potentially leading to the distribution of malicious software.

Patch / fix

  • Red Hat multicluster engine for Kubernetes 2.10 1787263075
  • Red Hat multicluster engine for Kubernetes 2.11 1787321579
  • Red Hat multicluster engine for Kubernetes 2.17 1787083639
  • Red Hat multicluster engine for Kubernetes 2.6 1787317415
  • Red Hat multicluster engine for Kubernetes 2.8 1787318262
  • Red Hat multicluster engine for Kubernetes 2.9 1787287150

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-75569 updated cvss 7.7

mce-operator-bundle: All GitHub Actions pinned by mutable tag, not commit SHA

  • Red Hat multicluster engine for Kubernetes 2.6 multicluster-engine/mce-operator-bundle 1787317415
    fixed: vendor fix RHSA-2026:59643
  • Red Hat multicluster engine for Kubernetes 2.8 multicluster-engine/mce-operator-bundle 1787318262
    fixed: vendor fix RHSA-2026:59642
  • Red Hat multicluster engine for Kubernetes 2.9 multicluster-engine/mce-operator-bundle 1787287150
    fixed: vendor fix RHSA-2026:59638
  • Red Hat multicluster engine for Kubernetes 2.10 multicluster-engine/mce-operator-bundle 1787263075
    fixed: vendor fix RHSA-2026:59637
  • Red Hat multicluster engine for Kubernetes 2.11 multicluster-engine/mce-operator-bundle 1787321579
    fixed: vendor fix RHSA-2026:59636
  • Red Hat multicluster engine for Kubernetes 2.17 multicluster-engine/mce-operator-bundle 1787083639
    fixed: vendor fix RHSA-2026:59634

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 mo ago

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 48% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.7 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

Affected products

  • Red Hat multicluster engine for Kubernetes 2.10
  • Red Hat multicluster engine for Kubernetes 2.11
  • Red Hat multicluster engine for Kubernetes 2.17
  • Red Hat multicluster engine for Kubernetes 2.6
  • Red Hat multicluster engine for Kubernetes 2.8
  • Red Hat multicluster engine for Kubernetes 2.9

Classification

Weakness
  • CWE-1357 Reliance on Insufficiently Trustworthy Component

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.