CVE-2023-0869: opennms horizon Improper Input Validation
Vulnerability summary
CVE-2023-0869 is a medium (CVSS 6.1) Improper Input Validation vulnerability in opennms horizon. EPSS estimates a 0.41% chance of exploitation in the next 30 days, higher than 33.9% of scored vulnerabilities.
Timeline
- 23-02-2023PublishedVulnerability first disclosed.
- 02-08-2024Last modifiedVulnerability information updated.
Description
Cross-site scripting in outage/list.htm in multiple versions of OpenNMS Meridian and Horizon allows an attacker access to confidential session information. The solution is to upgrade to Meridian 2023.1.0 or newer, or Horizon 31.0.4 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.
CVSS metrics
3 scores · 3 sources · 1 version- CVE.orgCNA5.8MediumCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:NDiffers
- OSV · MavenEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
0.41%
Chance of exploitation in the next 30 days
Percentile
34%
Versus all other CVEs
30-day change
0.00 pp
From 0.41% on 22-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
Affected systems
Org.opennms1 product
- opennms-web-api≤ 31.0.3
3 vendors · 5 products
