Threats Tagged 'cve-2026-111235'
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Threats Tagged 'cve-2026-111235'
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CVE-2026-111235 is a critical authorization bypass vulnerability in the REST API of multiple versions of OpenNMS Meridian and Horizon. The issue arises because the Spring Security filter chains authorize requests based on case-sensitive HTTP method matching without a terminal deny rule. Requests using non-canonical HTTP method tokens (e.g., lowercase) bypass authentication, allowing remote unauthenticated attackers to read, create, modify, or delete monitored resources, including injecting events to manipulate alarms. The vulnerability affects versions prior to Meridian 2024.3.14, 2025.0.11, 2026.0.1 and Horizon 36.0.5. The vendor recommends upgrading to these fixed versions. The products are intended for private network deployment and should not be exposed directly to the Internet. Join the discussion | CVE Database V5 | 10/15/2026, 18:45:06 UTC Added: 10/15/2026, 19:04:33 UTC |
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