EUVD-2026-58265
GHSA-mw24-mh67-357p
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Network-accessible Kibana UI, low-privilege account sufficient (PR:L), no confidentiality loss, high integrity impact from unauthorized endpoint response action execution.
Primary rating from Vendor (elastic).
CVSS VectorVendor: elastic
Lifecycle Timeline
2DescriptionCVE.org
Missing Authorization (CWE-862) in Kibana can lead to unauthorized execution of Elastic Defend response actions on managed hosts via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A Kibana user who holds only detection rule authoring privileges for the Elastic Security solution can associate automated endpoint response actions with a detection rule, even though the dedicated Endpoint response action privileges that govern those capabilities (host isolation, process operations, and execute operations) have not been granted to that user. When such a rule generates alerts, the associated response actions are carried out against the matching hosts.
AnalysisAI
Missing authorization in Elastic Kibana's Security solution allows users holding only detection rule authoring privileges to associate and indirectly trigger Elastic Defend endpoint response actions - including host isolation, process termination, and remote execution - against managed hosts, without ever being granted the dedicated Endpoint response action privileges that are supposed to govern those capabilities. The exploitation path is indirect: a restricted user crafts a detection rule with embedded response actions, and when that rule generates alerts against matching endpoints, the privileged actions execute autonomously through the Elastic Defend agent. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid Kibana user account that has been granted the Elastic Security detection rule authoring privilege but has NOT been granted the dedicated Endpoint response action privileges (host isolation, process operations, or execute operations). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N scores 6.5 (Medium), reflecting network-accessible exploitation by any low-privilege authenticated user with no user interaction required, with high integrity impact. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Kibana to version 8.19.20 or 9.4.5, which are the patched releases identified in Elastic Security Advisory ESA-2026-95 (https://discuss.elastic.co/t/kibana-8-19-20-and-9-4-5-security-update-esa-2026-95/389527). … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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