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    CVE-2026-44595

    Yamcs is a mission control framework. Prior to 5.12.7, the IAM API endpoints listUsers, getUser, listGroups, and getGroup in yamcs-core did not enforce the required SystemPrivilege.ControlAccess check in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java, so any authenticated user, even one with low or no privileges, could enumerate all user accounts in the system including their usernames, superuser status, and group memberships. This issue is fixed in versions 5.12.7 and 5.13.0.

    Published:Jul 16, 2026
    Last Modified:Jul 18, 2026
    EPS:Jul 16, 2026
    EPSS Score:0.01019
    CVSS Score:4.3

    Affected Products

    Vendor
    Yamcs
    Product
    Yamcs

    Exploits

    https://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29https://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29https://www.exploit-db.com/exploits/52604https://github.com/ex-cal1bur/CVE-2026-44595

    Common Weakness Enumeration

    CWE-862 Missing Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

    Related CVEs

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    CVE-2026-55511 (CVSS 9.1) — Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs allows a user with SystemPrivilege.Con…
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    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