What’s Vulnerable › Vulnerabilities

CVE-2024-37886: Nextcloud user_oidc's ID4me does not validate signature or expiration

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-06-14 · updated 2026-06-17
• Weakness: CWE-347

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.

Affected products

• nextcloud User Oidc: before 1.3.5 — fixed in 1.3.5

How to fix

Upgrade to a fixed version: nextcloud User Oidc 1.3.5. Check the vendor advisory for mitigations.

References

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vw5h-29xf-g55g
• https://github.com/nextcloud/user_oidc/pull/715
• https://hackerone.com/reports/1878391
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vw5h-29xf-g55g
• https://github.com/nextcloud/user_oidc/pull/715
• https://hackerone.com/reports/1878391

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