MEDIUM SeverityCVSS 3.14.9CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

CVE-2026-42876

Last updated May 11, 2026 · Published May 11, 2026

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.

Affected products

1 listed

external-secrets:external-secrets

Mappings

CWE

CWE-285

CAPEC

None listed.

Research

Insecure direct object references (IDOR): detection and preventionInsecure direct object references let users access other users' data by changing an ID. Enforce object-level…

Training

Authorisation and Access ControlRBAC, ABAC, and privilege escalation patterns in real applications.

CVE-2026-42876

Description

Affected products

Mappings

Related