CVE-2022-39339

MEDIUM

nextcloud/openid_connect_user_backend < 1.2.1 - Cleartext Transmission of Sensitive Information

Title source: llm
STIX 2.1

Description

user_oidc is an OpenID Connect user backend for Nextcloud. In versions prior to 1.2.1 sensitive information such as the OIDC client credentials and tokens are sent in plain text of HTTP without TLS. Any malicious actor with access to monitor user traffic may have been able to compromise account security. This issue has been addressed in in user_oidc v1.2.1. Users are advised to upgrade. Users unable to upgrade may use https to access Nextcloud. Set an HTTPS discovery URL in the provider settings (in Nextcloud OIDC admin settings).

References (3)

Core 3
Core References
Permissions Required, Third Party Advisory
https://hackerone.com/reports/1687005

Scores

CVSS v3 4.3
EPSS 0.0030
EPSS Percentile 53.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-319
Status published
Products (1)
nextcloud/openid_connect_user_backend < 1.2.1
Published Nov 25, 2022
Tracked Since Feb 18, 2026