Nextcloud user_oidc OIDC signing bypass pre-1.3.5/2.0.0/3.0.0/4.0.0/5.0.0 (CVE-2024-37886)
CVE-2024-37886 Published on June 14, 2024
Nextcloud user_oidc's ID4me does not validate signature or expiration
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.
Vulnerability Analysis
CVE-2024-37886 is exploitable with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Improper Verification of Cryptographic Signature
The software does not verify, or incorrectly verifies, the cryptographic signature for data.
Products Associated with CVE-2024-37886
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Affected Versions
nextcloud security-advisories Version < 1.3.5 is affected by CVE-2024-37886Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.