CVE-2026-78583

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    CVE-2026-78583

    Published: 3 Sept 2026Last Modified: 10 Sept 2026

    Summary: Incorrect Authorization in Kibana Leading to Privilege Escalation

    Details: Incorrect Authorization (CWE-863) in Kibana can lead to privilege escalation via Input Data Manipulation (CAPEC-153). Elasticsearch cluster privilege declarations originating from integration packages were not validated before being used to mint credentials for enrolled Elastic Agents. A user holding Fleet management privileges could therefore cause every Elastic Agent on a targeted policy to receive a credential carrying arbitrarily elevated Elasticsearch cluster privileges, up to and including full cluster administration.

    References: https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-3-security-update-esa-2026-140/390158, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/78xxx/CVE-2026-78583.json, https://nvd.nist.gov/vuln/detail/CVE-2026-78583

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 1b6a7ece17463df5ff54a3e1302d825889aa1161
    Fixed -4fe44c255c3d0da06779b921e132cdc555ed9aff

    Affected versions

    v9.5.2
    v9.5.1
    v9.5.0

    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-2026-78583 | CVE-DB