EUVD-2026-41087
GHSA-vvj5-p4vc-v5q3
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Network-reachable via Kibana API, but AC:H reflects undisclosed prerequisite conditions; PR:L confirmed by description; confidentiality-only impact with no integrity or availability effect.
Primary rating from Vendor (elastic).
CVSS VectorVendor: elastic
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Lifecycle Timeline
1DescriptionCVE.org
Incorrect Authorization (CWE-863) in Elastic Defend can lead to unauthorized information disclosure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, a low-privileged authenticated user can access response action data that they are not authorized to view.
AnalysisAI
Incorrect Authorization (CWE-863) in Elastic Defend exposes response action data to low-privileged authenticated users who should not have access to it. The flaw, classified under CAPEC-1, arises because access controls on specific functionality are not properly enforced, allowing a user with minimal privileges to read security response action data belonging to other users or roles. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a low-privileged, authenticated user account within the Elastic deployment (PR:L per CVSS). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 score of 5.3 (Medium) is driven by AV:N (network reachable), PR:L (requires low-privileged account), AC:H (high complexity - 'under certain conditions'), and C:H (full confidentiality breach of response action data). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker who has obtained or created a low-privileged authenticated Kibana account - whether through credential theft, phishing, or a compromised service account - navigates to the Elastic Security response actions interface or queries the relevant API endpoint under the specific undisclosed conditions that bypass authorization checks. The attacker reads response action results intended for higher-privileged security analysts, gaining visibility into which hosts were isolated, what processes were killed, or what forensic files were collected, effectively mapping the scope of an ongoing security investigation. |
| Remediation | The primary remediation is to upgrade Elastic Defend to the fixed version(s) identified in Elastic Security Advisory ESA-2026-46, available at https://discuss.elastic.co/t/elastic-defend-8-19-13-9-2-7-9-3-2-security-update-esa-2026-46. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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