VULNERABILITY INTELLIGENCE
CVE-2026-53521
CVSS score6.4 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-06-12
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L
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.
Weakness classification
- security-advisories@github.com: CWE-863