4.8
CVSSv3

CVE-2023-39953

Published: 10/08/2023 Updated: 16/08/2023
CVSS v3 Base Score: 4.8 | Impact Score: 2.5 | Exploitability Score: 2.2
VMScore: 0

Vulnerability Summary

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, missing verification of the issuer would have allowed an malicious user to perform a man-in-the-middle attack returning corrupted or known token they also have access to. user_oidc 1.3.3 contains a patch. No known workarounds are available.

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nextcloud user oidc