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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-26287
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 16:17:07 UTC
Updated2026-10-06 20:03:40 UTC
DescriptionExternal 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.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

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

Problem Types: CWE-696 | CWE-696 CWE-696: Incorrect Behavior Order

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA External-secrets External-secrets affected >= 0.10.0, < 1.3.2 Not specified

References

ReferenceSourceLinkTags
github.com/external-secrets/external-secrets/security/advisories/GHSA-q7... [email protected] github.com
github.com/external-secrets/external-secrets/pull/5901 [email protected] github.com
github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5... [email protected] github.com
github.com/external-secrets/external-secrets/releases/tag/v1.3.2 [email protected] github.com
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