CVE-2026-26287

HIGH 7.1

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

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-696
Vendor	external-secrets
Product	external-secrets
Published	Oct 6, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

external-secrets / external-secrets

>= 0.10.0, < 1.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/external-secrets/external-secrets/security/advisories/GHSA-q7hv-xx6h-q2x8 github.com: https://github.com/external-secrets/external-secrets/pull/5901 github.com: https://github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5d2a1a60b9ac3df4a93ba github.com: https://github.com/external-secrets/external-secrets/releases/tag/v1.3.2