CVE-2026-53523

Published: Jun 12, 2026Modified: Jun 17, 2026Deferred

6.8

Vector

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

Exploitability: 1.6 / Impact: 5.2

Source: security-advisories@github.com (Secondary)

Description

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.

Related CWEs

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks.

References (2)

https://github.com/nezhahq/nezha/security/advisories/GHSA-9rc6-8cjv-rcvx

Source: security-advisories@github.com

https://github.com/nezhahq/nezha/security/advisories/GHSA-9rc6-8cjv-rcvx

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.