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Vulnerabilities

Vulnerability · CVE-2026-42875

External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets.

Published May 11, 2026 · catalog updated Jun 17, 2026 · External Secrets Operator reads

Check if you run it

No confirmed exploitation is on record for CVE-2026-42875. EPSS is 0.37%. Act only if a listed version of External Secrets Operator reads is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (External Secrets Operator reads).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.37%
Remediation
Advisory link
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-42875

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-42875. EPSS is 0.37%. Act only if a listed version of External Secrets Operator reads is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-285: Improper Authorization; CWE-668: Exposure of Resource to Wrong Sphere. EPSS 0.37%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Kubernetes security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 11, 2026 · NIST NVD

    Detected

    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 th

  2. Jun 17, 2026 · NIST NVD

    Updated

    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 th

Sources

  • CVE.orgVulnerability recordCVE-2026-42875

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-42875

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-42875

    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 caPro

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.