CVE-2026-81509

nforwardauth is a forward auth service that allows the use of a single authentication middleware for multiple sites. Versions prior to 1.5.1 accept an unvalidated r query parameter on the /login endpoint and use them as the post-authentication redirect destination. An unauthenticated attacker can...

CVE-2026-81509 nforwardauth: Unvalidated r parameter allows post-authentication open redirect

nforwardauth is a forward auth service that allows the use of a single authentication middleware for multiple sites. Versions prior to 1.5.1 accept an unvalidated r query parameter on the /login endpoint and use them as the post-authentication redirect destination. An unauthenticated attacker can...

CVE-2026-81509

The nforwardauth forward authentication service (versions prior to 1.5.1 ) is vulnerable to an open redirect due to an unvalidated r query parameter on the /login endpoint. An unauthenticated attacker can craft a legitimate login URL that redirects a user to an attacker-controlled website followi...

EUVD-2026-110037

nforwardauth is a forward auth service that allows the use of a single authentication middleware for multiple sites. Versions prior to 1.5.1 accept an unvalidated r query parameter on the /login endpoint and use them as the post-authentication redirect destination. An unauthenticated attacker can...

CVE-2026-81509 nforwardauth: Unvalidated r parameter allows post-authentication open redirect

nforwardauth is a forward auth service that allows the use of a single authentication middleware for multiple sites. Versions prior to 1.5.1 accept an unvalidated r query parameter on the /login endpoint and use them as the post-authentication redirect destination. An unauthenticated attacker can...