What is CVE-2026-53522?

CVE-2026-53522 is a medium-severity vulnerability in Nezhahq Nezha, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-06-12.

How severe is CVE-2026-53522?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Nezhahq Nezha

CVE-2026-53522

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 1.0.0 to before version 2.2.0, the Nezha dashboard exposes two endpoints that create long-lived WebSocket streams to monitored age…

EPSS: 0.003 (21.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nezhahq Nezha — versions >= 1.0.0, < 2.2.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-53522?: CVE-2026-53522 is a medium-severity vulnerability in Nezhahq Nezha, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-06-12.
How severe is CVE-2026-53522?: Medium severity. CVSS v3 base score is 6.5 out of 10.