title: Open redirect in user_saml via RelayState parameter in Nextcloud User Saml
description: Nextcloud User Saml is an app for authenticating Nextcloud users using SAML. In affected versions users can be given a link to the Nextcloud server and end up on a uncontrolled thirdparty server. It is recommended that the User Saml app is upgraded to version 5.1.5, 5.2.5, or 6.0.1. There are no known workarounds for this issue.
problem types: CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
affected:
{
vendor: nextcloud
product: security-advisories
versions:
version: >= 5.0.0, < 5.1.5, status: affected
version: >= 5.2.0, < 5.2.5, status: affected
version: >= 6.0.0, < 6.0.1, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: HIGH
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 3.1
baseSeverity: LOW
confidentialityImpact: NONE
integrityImpact: LOW
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
version: 3.1
]