CVE-2026-66792CWE-863broken-access-control

CVE-2026-66792

Critical · published August 17, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
52.2
In the wild
Unconfirmed
What it is

A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00689 · 52.2th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-08-17T23:16Z
References (11)
EPSS history
Timeline
  • 17 AUG 18:12Z
    Multicloud-operators-subscription: multicloud-operators-subscription: isclusteradmin() trusts user-settable annotations on managed clusters
    cvelistv5