Vulnerability Report

CVE-2026-53519

Title: Arbitrary File Read via Path Traversal

Arbitrary File Access

Proof Of Concept

PoC Available for CVE-2026-53519

CWE Category CWE-22

Published Date Jun 12, 2026

Modified Date Jun 15, 2026

Exploit Status Available

Score 9.1 CVSS v3.1

Exploit Probability (EPSS)

0.38%

Vulnerability Summary

CVE-2026-53519: 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.

Impacted Vendors

Analysis in Progress...

Reference Links

https://github.com/nezhahq/nezha/security/advisories/GHSA-5c25-7vpj-9mqh

CVSS v3.1

Source Entity [email protected]

Severity CRITICAL

9.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-53519 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/tar-xz/CVE-2026-53519-PoC

View Code

June 15, 2026 MODIFIED

Vulnerability data updated via NVD.

June 12, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


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

Affected Stack

No specific products linked.