{"id":"CVE-2026-45694","summary":"LibreNMS: Reflected XSS in the Proxmox app view via unsanitized instance/vmid parameters","details":"LibreNMS is a network monitoring system. In versions up to and including 26.4.0, the Proxmox application view is vulnerable to reflected cross-site scripting through the user-supplied instance and vmid GET parameters, which are reflected into the page title without adequate encoding. The parameters are placed into the page title with only strip_tags applied, and the title is then written into an inline document.title assignment through string interpolation, so a single quote terminates the JavaScript string and the remaining input runs as script. An attacker who lures an authenticated user into following a crafted link can execute script in that user's session, enabling actions such as theft of session data. This issue is fixed in version 26.5.0.","aliases":["GHSA-jmqm-f8q4-v7wx"],"modified":"2026-08-28T03:46:57.435036336Z","published":"2026-08-26T21:42:01.423Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45694.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45694.json"},{"type":"ADVISORY","url":"https://github.com/librenms/librenms/security/advisories/GHSA-jmqm-f8q4-v7wx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45694"},{"type":"FIX","url":"https://github.com/librenms/librenms/commit/0be1bfd7746cea26bf7da40e82b70f75b724d0f8"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/librenms/librenms","events":[{"introduced":"0"},{"fixed":"0be1bfd7746cea26bf7da40e82b70f75b724d0f8"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"26.5.0"}]}}],"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-2026-45694.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"}]}