https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-07T17:14:08.135133+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/fkie_cve-2026-26287 fkie_cve-2026-26287 2026-10-07T17:14:08.742950+00:00

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.

 https://vulnerability.circl.lu/vuln/ghsa-q7hv-xx6h-q2x8 GHSA-q7hv-xx6h-q2x8 — External Secrets Operator: label enforcement bypass in webhook generator enables secret exfiltration 2026-10-07T17:14:08.743076+00:00

Affected: Go: github.com/external-secrets/external-secrets

## Summary 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`.

## Impact A user with the permission to create webhook generator can set the webhook generator to a victim' secret (which was not previously labelled for webhook's use), and exfiltrate it to a malicious URL.

## Mitigations Until you upgrade, you can reduce risk by: - disabling webhook generators if not needed (or denying `generators.external-secrets.io/v1alpha1` `Webhook` via an admission policy); - restricting RBAC: limit who can create generators of kind `Webhook`; - enforcing an admission policy (OPA Gatekeeper / Kyverno) requiring referenced secrets to be labeled `external-secrets.io/type=webhook`; - restricting egress from external-secrets controller pods to an allowlist (kubernetes `NetworkPolicy` / service mesh egress policy).

## References - PR #5901 (fix: webhook initialization order)