Insufficient Granularity of Access Control Affecting github.com/argoproj-labs/argocd-image-updater/pkg/argocd package, versions <1.1.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published3 May 2026
- disclosed15 Apr 2026
- creditUnknown
Introduced: 15 Apr 2026
CVE-2026-6388 (opens in a new tab)How to fix?
Upgrade github.com/argoproj-labs/argocd-image-updater/pkg/argocd to version 1.1.1 or higher.
Overview
Affected versions of this package are vulnerable to Insufficient Granularity of Access Control in namespace validation for the ImageUpdater resources. An attacker can perform unauthorized image updates on applications in other namespaces by creating or modifying ImageUpdater resources, impacting application integrity and confidentiality in multi-tenant environments.
Workaround
This vulnerability can be mitigated by configuring AppProject resources to enforce strict tenant isolation or restricting the permissions of the controller to its designated namespaces.