Vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2
CVE-2026-76139
A flaw was found in acm-operator-bundle. The build process for this component downloads and runs a script from a remote source without verifying its authenticity or integrity. This script gains access to sensitive credentials, such as GitHub access tokens and registry passwords, used in the build environment. A remote attacker could exploit this vulnerability to inject malicious code, leading to unauthorized access to build resources and potential compromise of the resulting operator bundle.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-76139 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:60399 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:60401 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:60403 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:60400 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:60402 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:60404 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-76139?
- CVE-2026-76139 is a high-severity vulnerability in Red Hat Advanced Cluster Management For Kubernetes 2, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.0/10. Published 2026-08-19.
- How severe is CVE-2026-76139?
- High severity. CVSS v3 base score is 8.0 out of 10.