Medium severity · published Sep 1, 2026
CVE-2026-72644
Uncaught Exception in Kibana Leading to Denial of Service
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
Uncaught Exception (CWE-248) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user holding only the low-privileged feature access required to use the Observability AI Assistant can submit a specially crafted request that produces an unhandled error condition, terminating the Kibana process and denying service to all users and spaces on that instance until it is restarted.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
Kibana · Elastic
9.1.7 through 9.4.4; 9.5.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-72644
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-72644
Mitigation
https://discuss.elastic.co/t/kibana-9-4-5-9-5-1-security-update-esa-2026-115/390088
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