CVE-2026-26287 PUBLISHED

External Secrets Operator: label enforcement bypass in webhook generator enables secret exfiltration

Assigner: GitHub_M
Reserved: 12.02.2026 Published: 06.10.2026 Updated: 06.10.2026

External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Starting in version 0.10.0 and prior to version 1.3.2, a bug in the webhook generator initialization order incorrectly cleared the label-enforcement flag (EnforceLabels) after it was set, resulting in the provider-side check for external-secrets.io/type=webhook being skipped (and the operation to succeed while it should have failed with secret does not contain needed label 'external-secrets.io/type: webhook'. Update secret label to use it with webhook. Version 1.3.2 contains a patch.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVSS Score: 7.1

Product Status

Vendor external-secrets
Product external-secrets
Versions
  • Version >= 0.10.0, < 1.3.2 is affected

References

Problem Types

  • CWE-696: Incorrect Behavior Order CWE