CVE-2026-26934
February 26, 2026
Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.
Affected Packages
https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v8.18.0 <v8.19.12Fix Suggestion:
Update to version v8.19.12https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) =v9.3.0 <v9.3.1Fix Suggestion:
Update to version v9.3.1https://github.com/elastic/kibana.git (GITHUB):
Affected version(s) >=v9.0.0 <v9.2.6Fix Suggestion:
Update to version v9.2.6Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Validation of Specified Quantity in Input
EPSS
Base Score:
0.05
