VULNERABILITY INTELLIGENCE

CVE-2026-42876

CVSS score4.9 MEDIUM
EPSS probability0.21%
CISA KEVNot currently listed
Published2026-05-11
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.1, a user who only has permission to create ExternalSecret resources can cause the operator to create a Secret that Kubernetes will automatically populate with a long-lived token for the specified service account. This effectively allows the user to impersonate any service account in the namespace without needing direct create permissions on TokenRequest or Secrets of that type. This vulnerability is fixed in 2.4.1.

Weakness classification

  • security-advisories@github.com: CWE-285

Primary references