{"id":"CVE-2026-53523","revision":"d2b32ed8ab56432aade47db10ea15948","records":[{"revision":"d2b32ed8ab56432aade47db10ea15948","observedAt":"2026-10-27T14:13:22.737+00:00","statement":{"source":"nvd","id":"CVE-2026-53523","aliases":[],"title":"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 t…","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.","state":0,"publishedAt":"2026-06-12T22:16:52.523+00:00","modifiedAt":"2026-10-25T23:10:00.167+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","score":6.8,"severity":"MEDIUM"}],"references":["https://github.com/nezhahq/nezha/security/advisories/GHSA-9rc6-8cjv-rcvx"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53523","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-601"],"productCriteria":[],"sourceDates":{"published":"2026-06-12T22:16:52.523","lastModified":"2026-10-25T23:10:00.167"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-53523","identifiers":["CVE-2026-53523"]},"retained":false,"historicalAffected":[]}],"coverage":[]}