PT-2026-49004 · Nezhahq · Nezha

Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-53523

NVD

CVSS v3.1

6.8

Medium

Base vector

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

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 getRedirectURL function in oauth2.go:22-29 constructs the OAuth2 callback URL by concatenating the request's Host header with a fixed path, with zero validation of the Host header. This can result in host header injection. This issue has been patched in version 2.2.0.

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

CVE-2026-53523

Affected Products

Nezha

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-53523 · Security Note
• https://github.com/nezhahq/nezha/security/advisories/GHSA-9rc6-8cjv-rcvx · Note