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    CVE-2023-39954

    user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, an attacker that obtained at least read access to a snapshot of the database can impersonate the Nextcloud server towards linked servers. user_oidc 1.3.3 contains a patch. No known workarounds are available.

    Published:Aug 10, 2023
    Last Modified:Nov 21, 2024
    EPS:Aug 10, 2023
    EPSS Score:0.00374
    CVSS Score:3.8

    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…
    CVE-2023-39953 (CVSS 4.8) — user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in ver…
    CVE-2023-32074 (CVSS 8) — user_oidc app is an OpenID Connect user backend for Nextcloud. Authentication can be broken/bypassed in user_o…
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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