CVE-2023-0871

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    CVE-2023-0871

    Published: 11 Aug 2023Last Modified: 12 Aug 2026

    Summary: An XML External Entity injection vulnerability

    Details: XXE injection in /rtc/post/ endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to XML external entity (XXE) injection, which can be used for instance to force Horizon to make arbitrary HTTP requests to internal and external services. The solution is to upgrade to Meridian 2023.1.6, 2022.1.19, 2021.1.30, 2020.1.38 or Horizon 32.0.2 or newer. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet. OpenNMS thanks Erik Wynter and Moshe Apelbaum for reporting this issue.

    References: https://docs.opennms.com/horizon/32/releasenotes/changelog.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/0xxx/CVE-2023-0871.json, https://nvd.nist.gov/vuln/detail/CVE-2023-0871, https://github.com/OpenNMS/opennms/pull/6355, https://github.com/OpenNMS/opennms

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 243216ffd4af348f1f416b62c954efea92dbd44d
    Fixed -5bbc4b368d0785d6d574713cb41c42c5a5f4421d

    Affected versions

    31.0.8

    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-2023-0871 | CVE-DB