{"id":"CVE-2026-53520","aliases":["GHSA-x6fg-52vr-hj4w","GO-2026-5824"],"url":"https://o3.security/vulnerability/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.","published":"2026-06-12T21:03:58.782Z","modified":"2026-08-07T11:51:18.721139015Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/nezhahq/nezha","fixedVersion":"2.1.0"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:18.721139015Z"}}