{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-89054 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-89054 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-89054 is a high-severity missing authorization vulnerability in The OpenNMS Group Horizon, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-89054 and fix it if it is affected.\n\nWhat it is: CVE-2026-89054 is a high-severity missing authorization vulnerability in The OpenNMS Group Horizon, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-89054 in the wild and no public exploit code.\n\nAffected product: The OpenNMS Group Horizon. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-89054/ (Markdown: https://insights.sbomify.com/CVE-2026-89054/index.md)","id":"CVE-2026-89054","markdown":"https://insights.sbomify.com/CVE-2026-89054/index.md","name":"CVE-2026-89054","record":{"aliases":["GHSA-hcpr-9cm8-436x"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Network monitoring software","requires_auth":"none","summary":"Unauthenticated attackers can modify event and SNMP configurations in OpenNMS Horizon, disabling monitoring and alarm generation.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"OpenNMS","cpe":[],"cvss":{"score":8.2,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"}],"description":"A missing authorization vulnerability in OpenNMS Horizon allows configuration changes without authentication. The Spring Security policy for the /api/v2 REST API defines authorization rules for every HTTP method except PATCH, so the shipped @PATCH configuration endpoints for event configuration and SNMP data collection (which enable and disable event definitions and data-collection sources) are reachable with no authorization enforced. An unauthenticated attacker able to reach the web UI can disable event definitions and SNMP data collection, suppressing event and alarm generation and stopping metric collection - silently degrading monitoring and detection - with the change persisted and reloaded into the running system.\n\nThe solution is to upgrade to Horizon 36.0.4 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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"OpenNMS missing authorization on /api/v2 PATCH endpoints allows unauthenticated configuration changes","id":"CVE-2026-89054","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in Customer Reviews for WooCommerce","id":"CVE-2026-89055"},"packages":[],"prev":{"headline":"Hardcoded AES encryption key in Archer C6","id":"CVE-2026-89052"},"products":["Horizon"],"published":"2026-09-10","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-10","vendors":["The OpenNMS Group"]},"summary":"Unauthenticated attackers can modify event and SNMP configurations in OpenNMS Horizon, disabling monitoring and alarm generation.","url":"https://insights.sbomify.com/CVE-2026-89054/"}