CVE-2023-0872

ROLE_REST can be used to escalate to ROLE_ADMIN via /rest/users

HIGH
8
CVSS Score
Published: August 14, 2023 at 05:21 PM UTC
Updated: June 17, 2026 at 05:26 AM UTC
2 products affected across 1 vendorMeridianHorizon

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Severity
HIGH8
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

The Horizon REST API includes a users endpoint in OpenMNS Horizon 31.0.8 and versions earlier than 32.0.2 on multiple platforms is vulnerable to elevation of privilege. 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 for reporting this issue.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

31.0.8 ≤ v < 32.0.231.0.8
Affected range stops below 32.0.2, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 31.0.8 (unknown)
2020.0.0 ≤ v ≤ 2020.1.372021.0.0 ≤ v ≤ 2021.1.292022.0.0 ≤ v ≤ 2022.1.182023.0.0 ≤ v ≤ 2023.1.52020.0.02021.0.02022.0.02023.0.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269NVD-CWE-noinfo

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