Vulnerability record · CVE-2024-37312 · published 14 June 2024

CVE-2024-37312: Nextcloud user oidc improper access control vulnerability

Nextcloud · User Oidc

user_oidc app is an OpenID Connect user backend for Nextcloud. Missing access control on the ID4me endpoint allows an attacker to register an account eventually getting access to data that is available to all registered users. It is recommended that the OpenID Connect user backend is upgraded to 3.0.0 (Nextcloud 20-23), 4.0.0 (Nexcloud 24) or 5.0.0 (Nextcloud 25-28).

6.3 CVSS 3.1 Medium EPSS 0.64% · top 51.5% CWE-284 · Improper access control

6.3CVSS 3.1 base score

0.64%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

6References, 2 tagged exploit

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

User Oidc Nextcloud

References

Link	Tags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vw7g-959g-vj6q	Vendor Advisory
https://github.com/nextcloud/user_oidc/commit/9f68a716ecd264160a7c098b8840313f1ac855f2	Patch
https://hackerone.com/reports/2376929	ExploitThird Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vw7g-959g-vj6q	Vendor Advisory
https://github.com/nextcloud/user_oidc/commit/9f68a716ecd264160a7c098b8840313f1ac855f2	Patch
https://hackerone.com/reports/2376929	ExploitThird Party Advisory

Track CVE-2024-37312 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-32074Nextcloud user oidc improper restriction of authentication attempts vulnerabilityuser_oidc app is an OpenID Connect user backend for Nextcloud. Authentication can be broken/bypassed in user_oidc app. It is recommended that the Nex…EPSS 0.85%25 May 2023 8.8CVE-2026-45284Nextcloud user oidc improper access control vulnerabilityNextcloud is an open source content collaboration platform. From version 1.3.6 to before version 8.4.0, an improper check allowed users that where pr…EPSS 0.36%1 Jun 2026 8.1CVE-2023-39954Nextcloud user oidc missing encryption vulnerabilityuser_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, …EPSS 0.44%10 Aug 2023 6.1CVE-2026-45278Nextcloud user oidc open redirect vulnerabilityNextcloud is an open source content collaboration platform. From version 6.1.0 to before version 8.2.2, an attacker can craft links that would redire…EPSS 0.32%1 Jun 2026 6.1CVE-2024-52512Nextcloud user oidc open redirect vulnerabilityuser_oidc app is an OpenID Connect user backend for Nextcloud. A malicious user could send a malformed login link that would redirect the user to a p…EPSS 0.42%15 Nov 2024 5.4CVE-2023-28848Nextcloud user oidc cross-site request forgery vulnerabilityuser_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 effect…EPSS 0.33%4 Apr 2023 4.8CVE-2023-39953Nextcloud user oidc vulnerabilityuser_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, …EPSS 0.54%10 Aug 2023 4.7CVE-2024-37886Nextcloud user oidc improper verification of cryptographic signature vulnerabilityuser_oidc app is an OpenID Connect user backend for Nextcloud. An attacker could potentially trick the app into accepting a request that is not signe…EPSS 0.24%14 Jun 2024

Source: NIST National Vulnerability Database (record CVE-2024-37312), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.