{"id":"CVE-2026-84190","summary":"LibreNMS before 26.5.0 Remote Code Execution via AboutController","details":"LibreNMS versions before 26.5.0 contain a remote code execution vulnerability in the AboutController where the snmpget configuration parameter is passed to shell_exec() without proper validation. An authenticated administrator can modify the snmpget configuration to point to a malicious executable file and trigger code execution by accessing the /about endpoint.","aliases":["GHSA-jf24-8g2h-2wg7"],"modified":"2026-09-02T03:47:05.830517546Z","published":"2026-09-01T11:33:55.215Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84190.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-77"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84190.json"},{"type":"ADVISORY","url":"https://github.com/librenms/librenms/security/advisories/GHSA-jf24-8g2h-2wg7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-84190"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/librenms-before-26.5.0-remote-code-execution-via-aboutcontroller"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/librenms/librenms","events":[{"introduced":"0"},{"fixed":"403fa2ddf262d4cbd7e1748ed7678468cc7248d1"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"26.5.0"}],"source":"AFFECTED_FIELD"}}],"versions":["26.4.1","26.4.0","26.3.1","26.3.0","26.2.0","26.1.0","25.12.0","25.11.0","25.10.0","25.9.0","25.8.0","25.7.0","25.6.0","25.5.0","25.4.0","25.3.0","25.2.0","25.1.0","24.12.0","24.11.0","24.10.1","24.10.0","24.9.1","24.9.0","24.8.0","24.7.0","24.6.0","24.5.0","24.4.1","24.4.0","24.3.0","24.2.0","24.1.0","23.11.0","23.10.0","23.9.1","23.9.0","23.8.2","23.8.1","23.8.0","23.7.0","23.6.0","23.5.0","23.4.1","23.4.0","23.2.0","23.1.0","22.12.0","22.11.0","22.10.0","22.9.0","22.8.0","22.7.0","22.6.0","22.5.0","22.4.0","22.3.0","22.2.1","22.2.0","22.1.0","21.12.1","21.12.0","21.11.0","21.10.0","21.9.0","21.8.0","21.7.0","21.6.0","21.5.1","21.5.0","21.4.0","21.3.0","21.2.0","21.1.0","1.70.1","1.70.0","1.69","1.68","1.67","1.66","1.65","1.64.1","1.64","1.63","1.62","1.61","1.60","1.59","1.58.1","1.58","1.57","1.56","1.55","1.54","1.53.1","1.53","1.52","1.51","1.50","1.49","1.48.1","1.48","1.47","1.46","1.45","1.44","1.43","1.42.01","1.42","1.41","1.40","1.39","1.38","1.37","1.36","1.35","1.33","1.32","1.31.03","1.31.02","1.31.01","1.28","1.27","1.26","1.25","1.21","201609","1.20","20160828","1.19","201608","201607","201606","201605","201604","201603","201602","201601","201512","201511","201510","201509","201508","201507","201505","201506","0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-84190.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}