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    CVE-2026-103005

    Memory Allocation with Excessive Size Value (CWE-789) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user with connector management privileges could cause the cluster to allocate an uncontrolled amount of memory when connector resources with an excessively large `description` field are created and subsequently accessed, exhausting available heap memory and crashing the affected node.

    Published:Oct 6, 2026
    Last Modified:Oct 9, 2026
    EPS:Oct 6, 2026
    EPSS Score:0.00302
    CVSS Score:6.5

    Affected Products

    Vendor
    Elastic
    Product
    Elasticsearch

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-103008 (CVSS 6.5) — Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to Denial of Service via a specially crafted reques…
    CVE-2026-103007 (CVSS 7.2) — Incorrect Authorization (CWE-863) in Elasticsearch can lead to Privilege Escalation via a delegated administra…
    CVE-2026-103006 (CVSS 6.5) — Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to Denial of Service via a specially crafted, deepl…
    CVE-2026-102411 (CVSS 6.5) — Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to Denial of Service …
    CVE-2026-102409 (CVSS 6.5) — Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to termi…
    CVE-2026-102408 (CVSS 4.3) — Inefficient Regular Expression Complexity (CWE-1333) in Elasticsearch can lead to denial of service via Regula…
    CVE-2026-102407 (CVSS 5.4) — Incorrect Authorization (CWE-863) in Elasticsearch can lead to unauthorized data stream modification via Acces…
    CVE-2026-102404 (CVSS 6.5) — Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Alloc…
    CVE-2026-94408 (CVSS 4.9) — Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead denial of service via Excessive Allocati…

    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-2026-103005 — Elastic (Medium 6.5) | CVE-DB