CVE-2023-39953
MEDIUMuser_oidc <1.3.3 - Man-in-the-Middle
Title source: llmDescription
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 attacker 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.
Scores
CVSS v3
4.8
EPSS
0.0049
EPSS Percentile
65.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Classification
CWE
CWE-303
Status
published
Affected Products (1)
nextcloud/user_oidc
< 1.3.3
Timeline
Published
Aug 10, 2023
Tracked Since
Feb 18, 2026