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Vulnerability record · CVE-2024-37886 · published 14 June 2024

CVE-2024-37886: Nextcloud user oidc improper verification of cryptographic signature vulnerability

Nextcloud · User Oidc

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.

4.7 CVSS 3.1 Medium EPSS 0.24% · top 86.4% CWE-347 · Improper verification of cryptographic signature
4.7CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

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

References

LinkTags
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vw5h-29xf-g55g Vendor Advisory
https://github.com/nextcloud/user_oidc/pull/715 Issue TrackingPatch
https://hackerone.com/reports/1878391 Issue Tracking
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vw5h-29xf-g55g Vendor Advisory
https://github.com/nextcloud/user_oidc/pull/715 Issue TrackingPatch
https://hackerone.com/reports/1878391 Issue Tracking

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2024-37886), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.