CVE-2026-42875
Medium
Description
External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.0, Namespaced SecretStore resources that used CAProvider with type ConfigMap could resolve CA material from another namespace when caProvider.namespace was set. This bypassed the namespace boundary enforced for SecretStore-backed references in providers that rely on the shared runtime CA resolver. This vulnerability is fixed in 2.4.0.
SeverityMedium
CVSS5.3
Exploit probability—
ProductGithub.com/external-secrets/external-secrets
PublishedMay 11, 2026
First seenMay 11, 2026
Weakness typeCWE-285CWE-285CWE-668CWE-668
How to fix
Update
- github.com/external-secrets/external-secrets2.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| github.com/external-secrets/external-secretsGo | v < 2.4.0, No range specified | 2.4.0 |
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