CVE-2023-0870 | Form Can Be Manipulated with Cross-Site Request Forgery (CSRF)

A form can be manipulated with cross-site request forgery in multiple versions of OpenNMS Meridian and Horizon. This can potentially allow an attacker to gain access to confidential information and compromise integrity. The solution is to upgrade to Meridian 2023.1.1 or Horizon 31.0.6 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.

Published: 2023-03-22 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-0870 is rated Moderate Risk (40.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.30%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2023-0870

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.07% 0.30% +0.23%
2 2026-03-24 0.04% 0.07% +0.03%
3 2023-03-23 — 0.04% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-0870

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.7 5.8 [email protected]
6.7 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 1.5 5.2 [email protected]

Weakness enumeration for CVE-2023-0870

GitHub Security Advisory for CVE-2023-0870

GHSA-jxr6-7qg5-8wv6 · Severity: medium · Ecosystem: maven — OpenNMS Meridian and Horizon vulnerable to Cross-Site Request Forgery

Affected software / configurations for CVE-2023-0870

Vendor Product Version Raw CPE
opennms horizon < 31.0.6 cpe:2.3:a:opennms:horizon:*:*:*:*:*:*:*:*
opennms meridian >= 2020.1.0, < 2020.1.33 cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*
opennms meridian >= 2021.1.0, < 2021.1.25 cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*
opennms meridian >= 2022.1.0, < 2022.1.14 cpe:2.3:a:opennms:meridian:*:*:*:*:*:*:*:*
opennms meridian 2023.1.0 cpe:2.3:a:opennms:meridian:2023.1.0:*:*:*:*:*:*:*

References for CVE-2023-0870

cvelogic Threat Intelligence