{"id":"CVE-2026-53521","revision":"598bf539a50e4bf3af1c6edc1b9e340b","records":[{"revision":"598bf539a50e4bf3af1c6edc1b9e340b","observedAt":"2026-10-25T13:17:16.273+00:00","statement":{"source":"nvd","id":"CVE-2026-53521","aliases":[],"title":"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, PATCH /server/{id} accepts and persists nonexistent ddns_profiles IDs for a member-owned server. If…","description":"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, PATCH /server/{id} accepts and persists nonexistent ddns_profiles IDs for a member-owned server. If another user later creates a DDNS profile with one of those IDs, the DDNS worker resolves the stored ID and dispatches an update using the other user's DDNS profile configuration in the context of the attacker's server. This issue has been patched in version 2.1.0.","state":0,"publishedAt":"2026-06-12T22:16:52.23+00:00","modifiedAt":"2026-06-17T10:57:57.643+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L","score":6.4,"severity":"MEDIUM"}],"references":["https://github.com/nezhahq/nezha/security/advisories/GHSA-39g2-8x68-pmx8"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53521","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-863"],"productCriteria":[],"sourceDates":{"published":"2026-06-12T22:16:52.230","lastModified":"2026-06-17T10:57:57.643"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-53521","identifiers":["CVE-2026-53521"]},"retained":false,"historicalAffected":[]}],"coverage":[]}