Medium severity · published Aug 13, 2026
CVE-2026-72631
Improper Privilege Management in Kibana Fleet Leading to Over-Scoped Elastic Agent API Keys
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
Improper Privilege Management (CWE-269) in Kibana Fleet can lead to privilege escalation via Privilege Escalation (CAPEC-233). An integration policy may optionally declare extra data streams that the integration writes to, which Fleet adds to the Elasticsearch API key issued to Elastic Agents enrolled in the corresponding agent policy. The resulting key allows new documents to be inserted and index mappings to be extended for specific indices. The key does not allow reading, updating, or deleting existing documents
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 26% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
Kibana · Elastic
9.1.0 through 9.4.4; 9.5.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72631
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-72631
Vendor Advisory
https://discuss.elastic.co/t/kibana-9-4-5-9-5-1-security-update-esa-2026-128/389539
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