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    CVE-2026-78581

    Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized data modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, an authenticated user could reference another user's AI Assistant conversation identifier to access or modify a conversation they do not own. Successful exploitation requires knowledge of a hard-to-guess identifier.

    Published:Aug 25, 2026
    Last Modified:Sep 2, 2026
    EPS:Aug 25, 2026
    EPSS Score:0.00124
    CVSS Score:4.2

    Affected Products

    Vendor
    Elastic
    Product
    Kibana

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-82302 (CVSS 8.1) — Incorrect Authorization (CWE-863) in Kibana can lead to unauthorized configuration modification via Exploiting…
    CVE-2026-82299 (CVSS 6.5) — Incorrect Authorization (CWE-863) in Kibana can lead to information disclosure via Exploiting Incorrectly Conf…
    CVE-2026-82298 (CVSS 4.3) — Incorrect Authorization (CWE-863) in Kibana can lead to denial of service via Exploiting Incorrectly Configure…
    CVE-2026-78596 (CVSS 4.3) — Missing Authorization in Kibana Leading to Unauthorized Modification of Data / Missing Authorization (CWE-862)…
    CVE-2026-78595 (CVSS 4.3) — Missing Authorization in Kibana Leading to Information Disclosure / Missing Authorization (CWE-862) in the Kib…
    CVE-2026-78593 (CVSS 4.3) — An insufficiently validated configuration field in Kibana's Cribl integration allows an authenticated user hol…
    CVE-2026-78583 (CVSS 8.1) — Incorrect Authorization (CWE-863) in Kibana can lead to privilege escalation via Input Data Manipulation (CAPE…
    CVE-2026-82293 (CVSS 4.3) — Incorrect Authorization (CWE-863) in the Kibana machine learning feature can lead to unauthorized resource con…
    CVE-2026-78586 (CVSS 6.5) — Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via E…
    CVE-2026-78584 (CVSS 4.3) — Observable Response Discrepancy (CWE-204) in the Kibana Osquery feature can lead to information disclosure via…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-78581 — Elastic (Medium 4.2) | CVE-DB