PT-2026-49001 · Nezhahq · Nezha

Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-53519

NVD

CVSS v3.1

9.1

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. Prior to version 2.0.13, fallbackToFrontend in the dashboard's NoRoute handler treats any URL whose raw string starts with /dashboard as an admin-frontend asset request. The check uses strings.HasPrefix, not a path-segment match, so the input /dashboard../data/config.yaml is accepted; strings.TrimPrefix leaves ../data/config.yaml; and path.Join("admin-dist", "../data/config.yaml") normalizes to data/config.yaml — which os.Stat finds and http.ServeFile returns. No authentication required. This issue has been patched in version 2.0.13.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-53519

Affected Products

Nezha

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-53519 · Security Note
• https://github.com/nezhahq/nezha/security/advisories/GHSA-5c25-7vpj-9mqh · Note