nextcloud openid connect user backend vulnerabilities and exploits

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user_oidc is an OpenID Connect user backend for Nextcloud. Versions before 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally...

Nextcloud Openid Connect User Backend

user_oidc is an OpenID Connect user backend for Nextcloud. In versions before 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. Any malicious actor with access to monitor user traffic may have been able to compr...

Nextcloud Openid Connect User Backend

user_oidc app is an OpenID Connect user backend for Nextcloud. Authentication can be broken/bypassed in user_oidc app. It is recommended that the Nextcloud user_oidc app is upgraded to 1.3.2

Nextcloud User Oidc

user_oidc app is an OpenID Connect user backend for Nextcloud. Missing access control on the ID4me endpoint allows an malicious user to register an account eventually getting access to data that is available to all registered users. It is recommended that the OpenID Connect user ...

user_oidc app is an OpenID Connect user backend for Nextcloud. An attacker could potentially trick the app into accepting a request that is not signed by the correct server. It is recommended that the Nextcloud user_oidc app is upgraded to 1.3.5, 2.0.0, 3.0.0, 4.0.0 or 5.0.0.

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