CVE-2026-53523
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.
- Affected products
- Nezha Monitoring
- Fix
- Available
- CVSS 3.1
- 6.8 MEDIUM
- EPSS
- 0.2% (15th percentile)
- Weakness
- CWE-601
- NVD status
- Deferred
- Published
- 2026-06-12
CVE-2026-53523 at NVD
No indexed exploits for CVE-2026-53523 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-53523 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.