CVE-2026-53521

Published: Jun 12, 2026Modified: Jun 17, 2026Deferred

6.4

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L

Exploitability: 3.1 / Impact: 2.7

Source: security-advisories@github.com (Secondary)

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.

Related CWEs

CWE-863

Incorrect Authorization

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (2)

https://github.com/nezhahq/nezha/security/advisories/GHSA-39g2-8x68-pmx8

Source: security-advisories@github.com

https://github.com/nezhahq/nezha/security/advisories/GHSA-39g2-8x68-pmx8

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.