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TI-2026-50874 Aliases CVE-2026-72632GHSA-hm4v-vwxq-29j4

Observable Discrepancy in Kibana Fleet Leading to Disclosure of Elastic Agent Elasticsearch API Keys

Priority LOW 31CWE-203Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-203.

Summary

Observable Discrepancy (CWE-203) in Kibana Fleet can lead to information disclosure via Excavation (CAPEC-116). Fleet removes the Elasticsearch API key value of an enrolled Elastic Agent from the responses of its agent listing capability, but that capability accepted caller-supplied filter expressions over the stored field that holds the value, and evaluated them with Kibana's own internal Elasticsearch privileges rather than the caller's. Because the number of matching agents is reported back to the caller, the difference between a matching and a non-matching filter formed a side channel from which the full API key value could be reconstructed one character at a time with a short sequence of requests.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00347 28th 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
ElasticKibana8.19.0 – 8.19.19; 9.0.0 – 9.4.4; 9.5.0—No fix listedCNA
  • Kibana VendorElastic Affected 8.19.0 – 8.19.19; 9.0.0 – 9.4.4; 9.5.0 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*8.19.0 to before 8.19.20; 9.0.0 to before 9.4.5VulnerableElastic
cpe:2.3:a:elastic:kibana:9.5.0:*:*:*:*:*:*:*9.5.0VulnerableElastic
  • cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:* Versions 8.19.0 to before 8.19.20; 9.0.0 to before 9.4.5 Vulnerable ·Elastic
  • cpe:2.3:a:elastic:kibana:9.5.0:*:*:*:*:*:*:* Versions 9.5.0 Vulnerable ·Elastic

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-72632
  2. 2026-10-03 Alias added: GHSA-hm4v-vwxq-29j4

References

Advisory 1

  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2018-12328 Kibana versions before 6.4.3 and 5.6.13 contain an arbitrary file inclusion flaw in the… CVSS 3.0CRITICAL 9.8
  • TI-2025-18692 Kibana arbitrary code execution via prototype pollution CVSS 3.1CRITICAL 9.8
  • TI-2020-05660 Code injection in Elastic Kibana CVSS 3.1HIGH 8.8
  • TI-2024-24803 Deserialization of untrusted data in Elastic Kibana CVSS 3.1CRITICAL 9.9
  • TI-2024-24800 Kibana arbitrary code execution via YAML deserialization CVSS 3.1CRITICAL 9.1
See all 188 →

Sources

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