CVE-2026-76139
Build script downloads allow RCE and credential theft in acm-operator-bundle.
Is CVE-2026-76139 being exploited?
Not confirmed. CVE-2026-76139 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-76139?
CVE-2026-76139 is rated High with a CVSS score of 8.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-76139?
Yes. A fix has been recorded for CVE-2026-76139. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-76139 affect?
CVE-2026-76139 affects acm-operator-bundle, CI/CD build environments, Kubernetes operator bundles, Container registries, and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-76139?
Stop remote-script builds, validate sources, rotate tokens, harden CI, apply vendor patch when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution in CI build, theft of GitHub tokens and registry creds, malicious operator bundle injection and access to build resources.
Immediate action required