🛡️ CVE-2023-39953
🟡 CVSS 4.8 — Medium ✅ No Known Exploit CWE-303 NVD
4.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 4.8
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE CWE-303
Public Exploit ✅ No
Source NVD
Published 2023-08-10
Updated 2026-06-08
Modified 2024-11-21

Affected Packages

Software From version Fixed in
user-oidc 1.0.0 1.3.3

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