{"id":"CVE-2026-53520","summary":"Nezha Monitoring: Authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing","details":"Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0.","aliases":["GHSA-x6fg-52vr-hj4w","GO-2026-5824"],"modified":"2026-07-31T18:31:46.309398908Z","published":"2026-06-12T21:03:58.782Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-284"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53520.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53520.json"},{"type":"ADVISORY","url":"https://github.com/nezhahq/nezha/security/advisories/GHSA-x6fg-52vr-hj4w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53520"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nezhahq/nezha","events":[{"introduced":"8b5e382fe217107c7b777ea9c6b4bc3d2e156202"},{"fixed":"1d70d2992ec7ee5fac2e12ce15d0ea8005a589d4"}],"database_specific":{"extracted_events":[{"introduced":"2.0.14"},{"fixed":"2.1.0"},{"introduced":"0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53520.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}