CVE-2026-72648: medium-severity vulnerability in Elastic Eck Operator
Cleartext Storage of Sensitive Information in an Environment Variable in Elastic Cloud on Kubernetes Leading to Information Disclosure
Published
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5epss 0.4%
Cleartext Storage of Sensitive Information in an Environment Variable (CWE-526) in Elastic Cloud on Kubernetes (ECK) can lead to information disclosure via Retrieve Embedded Sensitive Data (CAPEC-37). When ECK reconciles a Fleet Server resource that authenticates to Elasticsearch with a service account token, the token is written into the generated workload specification in cleartext rather than being referenced from the Kubernetes Secret that ECK maintains for the other credentials on the same path. Any principal able to read workload specifications in the affected namespace can therefore read a live Elasticsearch credential, even when Kubernetes RBAC does not grant that principal access to Secrets.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
Elastic · Eck OperatorRelated CVEs — Elastic Eck Operator
In the same product, most dangerous first.
CVE-2026-72640MEDIUMUnintended Proxy or Intermediary in Elastic Cloud on Kubernetes Leading to Cross-Namespace Secret DisclosureEPSS 0.4%CVE-2026-78600LOWIncomplete Cleanup in Elastic Cloud on Kubernetes Leading to Unauthorized Cross-Namespace Credential RetentionEPSS 0.3%CVE-2026-78609MEDIUMIncorrect Authorization in Elastic Cloud on Kubernetes Leading to Unauthorized Modification of DataEPSS 0.1%