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    CVE-2023-28848

    user_oidc is the OIDC connect user backend for Nextcloud, an open source collaboration platform. A vulnerability in versions 1.0.0 until 1.3.0 effectively allowed an attacker to bypass the state protection as they could just copy the expected state token from the first request to their second request. Users should upgrade user_oidc to 1.3.0 to receive a patch for the issue. No known workarounds are available.

    Published:Apr 4, 2023
    Last Modified:Feb 11, 2025
    EPS:Apr 4, 2023
    EPSS Score:0.00427
    CVSS Score:4.8

    Affected Products

    Vendor
    Nextcloud
    Product
    User Oidc

    Exploits

    No exploit reference

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    CVE-2024-52512 (CVSS 3.3) — user_oidc app is an OpenID Connect user backend for Nextcloud. A malicious user could send a malformed login l…
    CVE-2024-37886 (CVSS 5.4) — user_oidc app is an OpenID Connect user backend for Nextcloud. An attacker could potentially trick the app int…
    CVE-2024-37312 (CVSS 6.3) — user_oidc app is an OpenID Connect user backend for Nextcloud. Missing access control on the ID4me endpoint al…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High