CVE-2026-26287
External Secrets Operator: label enforcement bypass in webhook generator enables secret exfiltration
- State
- Published
- Severity
- 7.1 High
- Published
- Oct 6, 2026
- Updated
- Oct 6, 2026
- Reserved
- Feb 12, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N | GitHub_M |
Weaknesses
- CWE-696 Incorrect Behavior Order
Affected Products
| Product | Versions |
|---|---|
external-secretsexternal-secrets |
|
References
- https://github.com/external-secrets/external-secrets/security/advisories/GHSA-q7hv-xx6h-q2x8
- https://github.com/external-secrets/external-secrets/pull/5901
- https://github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5d2a1a60b9ac3df4a93ba
- https://github.com/external-secrets/external-secrets/releases/tag/v1.3.2
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