UBUNTU-CVE-2026-115731

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    UBUNTU-CVE-2026-115731

    Published: 3 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-115731

    Summary:

    Details: Deserialization of untrusted data in the report-processing code of Puppet, as used by Puppet Server, in the affected releases, allows a client that holds any CA-signed agent certificate to execute arbitrary code on the Puppet Server as its service user by submitting a report containing a crafted rich-data type via PUT request. Where the certificate authority autosigns requests without strong verification, an unauthenticated network attacker can obtain such a certificate.

    References: https://ubuntu.com/security/CVE-2026-115731, https://www.cve.org/CVERecord?id=CVE-2026-115731, https://portal.perforce.com/s/cve/a91Qi000003IaHpIAK/report-deserialization-code-execution

    Affected packages

    Package

    Name: puppet

    Purl: pkg:deb/ubuntu/puppet?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    3.2.4-2ubuntu2

    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
    UBUNTU-CVE-2026-115731 | CVE-DB