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TI-2026-50886 Aliases CVE-2026-72648GHSA-994r-4f38-cvgv

Cleartext Storage of Sensitive Information in an Environment Variable in Elastic Cloud on…

Priority LOW 29CWE-526Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00426 37th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ElasticEck Operator3.0.0 – 3.4.1—No fix listedCNA
  • Eck Operator VendorElastic Affected 3.0.0 – 3.4.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:elastic:elastic_cloud_on_kubernetes:*:*:*:*:*:*:*:*3.0.0 to before 3.5.0VulnerableElastic
  • cpe:2.3:a:elastic:elastic_cloud_on_kubernetes:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.5.0 Vulnerable ·Elastic

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72648
  2. 2026-10-03 Alias added: GHSA-994r-4f38-cvgv

References

Advisory 1

  • TI-2020-05658 Elastic Cloud on Kubernetes (ECK) versions prior to 1.1.0 generate passwords using a weak… CVSS 3.1HIGH 7.5
  • TI-2023-15034 Elastic Cloud on Kubernetes (ECK) secret token configuration issue CVSS 3.1MEDIUM 5.3
  • TI-2026-50879 Unintended Proxy or Intermediary in Elastic Cloud on Kubernetes Leading to Cross-Namespace Secret Disclosure CVSS 3.1MEDIUM 6.5
  • TI-2026-54658 Incorrect Authorization in Elastic Cloud on Kubernetes Leading to Unauthorized Modification of Data CVSS 3.1MEDIUM 5.4
  • TI-2026-54649 Incomplete Cleanup in Elastic Cloud on Kubernetes Leading to Unauthorized Cross-Namespace Credential Retention CVSS 3.1LOW 3.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences