ID :ISA-2026-100
High alertActiveCVSS 8.3/10IservicesCSIRT

Multiple vulnerabilities affecting Elastic Kibana

Executive Summary

Multiple vulnerabilities have been discovered in Elastic Kibana, allowing a malicious actor to elevate privileges, delete privileged resources, and modify configurations in an unauthorized manner.

Published on September 7, 2026 at 01:00 AM by Iservices Csirt17 views

Description

Technical context and vulnerability details

Kibana is an open source data visualization tool built for Elasticsearch, allowing users to create interactive dashboards, charts, and maps to explore, analyze, and present their data. This product is affected by several vulnerabilities labeled as follows: CVE-2026-63137: This vulnerability results from incorrect authorization (CWE-863). Exploitation of this vulnerability would allow an authenticated attacker with workflow editing permissions to execute scheduled workflows with the privileges of another, more privileged user, thereby allowing access and modification of data beyond their own permission scope. This vulnerability is classified as high with a severity score of 8.3 according to CVSS v3.1. CVE-2026-78592: This vulnerability is due to incorrect limitation of the path to a restricted directory (‘Path Traversal’ CWE-22). Exploitation of this vulnerability would allow an authenticated attacker with tag creation privileges to cause a subsequent administrative action in the tag management interface to act on an unintended target, resulting in the deletion of privileged resources, including administrative accounts and other organizational assets. Exploitation would require administrator interaction with the affected interface. This vulnerability is classified as high with a severity score of 7.3 according to CVSS v3.1. CVE-2026-78590: This vulnerability is caused by an incorrect restriction of the path to a restricted directory ('Path Traversal' CWE-22) in the Fleet functionality of Kibana. Exploitation of this vulnerability would allow an authenticated attacker, with write access to Fleet settings, to cause a subsequent administrative action to act on unintended internal resources, resulting in the deletion of privileged resources such as user accounts and other organizational assets. Exploitation would require administrator interaction with the affected Fleet interface. This vulnerability is classified as high with a severity score of 7.3 according to CVSS v3.1. CVE-2026-82302: This vulnerability results from incorrect authorization (CWE-863). Exploitation of this vulnerability would allow an authenticated attacker to modify configurations in an unauthorized manner. This vulnerability is classified as high with a severity score of 8.1 according to CVSS v3.1. CVE-2026-78583: This vulnerability results from incorrect authorization (CWE-863). Exploitation of this vulnerability would allow an authenticated attacker with Fleet management privileges to manipulate Elasticsearch cluster privilege claims from integration packages. This could lead to each Elastic Agent in a targeted policy receiving accreditation with arbitrarily elevated Elasticsearch cluster privileges, including full cluster administration. This vulnerability is classified as high with a severity score of 8.1 according to CVSS V3.1.

Potential Risks & Impact

Potential consequences upon exploitation

  • Privilege escalation;
  • Data integrity breach;
  • Data privacy breach;
  • Compromise of system integrity;
  • Unauthorized deletion of privileged resources, including administrative accounts and organizational assets;
  • Unauthorized modification of configurations;

Affected systems

Products, components and targeted versions

  • CVE-2026-63137: Kibana versions prior to 9.4.3;
  • CVE-2026-78592: Kibana versions prior to 8.19.16, 9.3.5 and 9.4.2;
  • CVE-2026-78590: Kibana versions prior to 8.19.18, 9.3.6 and 9.4.3;
  • CVE-2026-82302: Kibana versions prior to 8.19.22, 9.4.7 and 9.5.3;
  • CVE-2026-78583: Kibana versions prior to 8.19.21, 9.4.6 and 9.5.3;

Recommended Remediations & Actions

Immediate actions and recommended mitigations

  • Update Kibana to the latest stable version available;

Advisory Specifications

ISA-2026-100
CVSS scoreHIGH
8.3/ 10.0
0.0 (Low)5.0 (Med)10.0 (Crit)
PriorityHigh
StatusActive
Typesecurite
Published onSeptember 7, 2026 at 01:00 AM
OrigineIservicesCSIRT
Audience17 views

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