{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-19135 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-19135 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-19135 is a medium-severity code injection vulnerability in The OpenNMS Group Horizon, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-19135 and fix it if it is affected.\n\nWhat it is: CVE-2026-19135 is a medium-severity code injection vulnerability in The OpenNMS Group Horizon, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-19135 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-2026-19135/ (Markdown: https://insights.sbomify.com/CVE-2026-19135/index.md)","id":"CVE-2026-19135","markdown":"https://insights.sbomify.com/CVE-2026-19135/index.md","name":"CVE-2026-19135","record":{"aliases":["GHSA-q2r2-4mh9-4268","UBUNTU-CVE-2026-19135"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Network monitoring software","requires_auth":"low_privilege","summary":"Low-privileged users can bypass JEXL sandbox in OpenNMS Measurements API to load arbitrary classes, risking data confidentiality and integrity.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"OpenNMS","cpe":[],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-470","name":"Use of Externally-Controlled Input to Select Classes or Code"}],"description":"A JEXL expression sandbox bypass exists in multiple versions of OpenNMS Meridian and Horizon. A low-privileged authenticated user can submit a crafted expression to the Measurements REST API that escapes the sandbox and loads arbitrary Java classes on the server. This can potentially allow an attacker to gain access to confidential information and compromise integrity.\n\nThe solution is to upgrade to Meridian 2024.3.12, 2025.0.9 and Horizon 36.0.3 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 JEXL sandbox bypass in Measurements REST API allows ROLE_USER to load arbitrary classes","id":"CVE-2026-19135","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Command injection in Tianxi AI Agent PC Application","id":"CVE-2026-19136"},"packages":[],"prev":{"headline":"Missing authorization in multicluster engine for Kubernetes 2.10","id":"CVE-2026-19130"},"products":["Horizon","Meridian"],"published":"2026-08-13","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-13","vendors":["The OpenNMS Group"]},"summary":"Low-privileged users can bypass JEXL sandbox in OpenNMS Measurements API to load arbitrary classes, risking data confidentiality and integrity.","url":"https://insights.sbomify.com/CVE-2026-19135/"}