Security Advisory

CVE-2026-53521

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-12 21:04:27

Last updated 2026-06-15 15:14:32

Assigner GitHub_M

CVSS score 6.4

State PUBLISHED

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.

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