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CVE-2026-66783 (GCVE-0-2026-66783)

Vulnerability from cvelistv5 – Published: 2026-08-18 17:06 – Updated: 2026-09-03 04:41
VLAI
Title
Submariner-operator: release workflow consumes same-org composite action via mutable @devel branch ref
Summary
A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image.
Severity
4.4 (Medium)
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-19 15:04 UTC
CWE
  • CWE-1357 - Reliance on Insufficiently Trustworthy Component
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:63016 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-66783 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2507528 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788105072 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
Create a notification for this product.
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788073481 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
Create a notification for this product.
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2     cpe:/a:redhat:acm:2
Create a notification for this product.
Date Public
2026-08-18 16:35
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.