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CVE-2026-42875
Published:May 11, 2026
Updated:May 16, 2026
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.
Affected Packages
https://github.com/external-secrets/external-secrets.git (GITHUB):
Affected version(s) >=v0.1.0 <v2.4.0
Fix Suggestion:
Update to version v2.4.0
github.com/external-secrets/external-secrets (GO):
Affected version(s) >=v0.0.0-20201201232603-ec599c51c285 <v2.4.0
Fix Suggestion:
Update to version v2.4.0
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
LOW
Subsequent System Integrity
LOW
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Exposure of Resource to Wrong Sphere
Improper Authorization
EPSS
Base Score:
0.04