Vendor
OpenNMS vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 7 vulnerabilities in OpenNMS: 2 in the last 7 days and 7 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-127236, was published on 12 November 2026. 2 vulnerabilities in the last four weeks, up from none in the four before. 1 critical against 0. 2 technologies have a page of their own.
- Last 7 days
- 2
- Last 90 days
- 7
- Critical, all time
- 1
- Exploited in the wild
- 0
About OpenNMS
Open-source network monitoring and management platform.
OpenNMS technologies
Latest OpenNMS vulnerabilities
- CVE-2026-127236: OpenNMS Meridian and Horizon argument injection in RRD graphmediumCVSS 5.4
- CVE-2026-127235: OpenNMS Meridian and Horizon reflected cross-site scripting in web UImediumCVSS 6.1
- CVE-2026-111252: OpenNMS Meridian and Horizon XML entity expansion denial of servicemediumCVSS 6.5EPSS 0.3%
- CVE-2026-111235: OpenNMS Meridian and Horizon REST API authorization bypasscriticalCVSS 9.1EPSS 0.4%
- CVE-2026-89089: OpenNMS Meridian and Horizon SQL injection in JasperReportsmediumCVSS 6.5EPSS 0.4%
- CVE-2026-19596: OpenNMS XML External Entity injection in XML collectormediumCVSS 5.9EPSS 0.2%
- CVE-2026-89054: OpenNMS Horizon authorization bypass in /api/v2 PATCH endpointshighCVSS 8.2EPSS 0.5%
Most severe OpenNMS vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-111235: OpenNMS Meridian and Horizon REST API authorization bypasscriticalCVSS 9.1EPSS 0.4%
- CVE-2026-89054: OpenNMS Horizon authorization bypass in /api/v2 PATCH endpointshighCVSS 8.2EPSS 0.5%
- CVE-2026-89089: OpenNMS Meridian and Horizon SQL injection in JasperReportsmediumCVSS 6.5EPSS 0.4%
- CVE-2026-111252: OpenNMS Meridian and Horizon XML entity expansion denial of servicemediumCVSS 6.5EPSS 0.3%
- CVE-2026-127235: OpenNMS Meridian and Horizon reflected cross-site scripting in web UImediumCVSS 6.1
- CVE-2026-19596: OpenNMS XML External Entity injection in XML collectormediumCVSS 5.9EPSS 0.2%
- CVE-2026-127236: OpenNMS Meridian and Horizon argument injection in RRD graphmediumCVSS 5.4
Vulnerabilities per week
2 vulnerabilities in the last four weeks, up from none in the four before. 1 critical against 0. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 3 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 2 | 1 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 2 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many OpenNMS vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/vendors/opennms)<a href="https://junglewise.ai/threats/vendors/opennms"><img src="https://junglewise.ai/threats/vendors/opennms/badge.svg" alt="OpenNMS vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/vendors/opennms.json, and this page as text at https://junglewise.ai/threats/vendors/opennms.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "OpenNMS vulnerabilities", https://junglewise.ai/threats/vendors/opennms, 13 November 2026.