CVE-2022-39338

LOW

nextcloud/openid_connect_user_backend < 1.2.1 - Stored Cross-Site Scripting via Discovery URL Validation

Title source: llm
STIX 2.1

Description

user_oidc is an OpenID Connect user backend for Nextcloud. Versions prior to 1.2.1 did not properly validate discovery urls which may lead to a stored cross site scripting attack vector. The impact is limited due to the restrictive CSP that is applied on this endpoint. Additionally this vulnerability has only been shown to be exploitable in the Safari web browser. This issue has been addressed in version 1.2.1. Users are advised to upgrade. Users unable to upgrade should urge their users to avoid using the Safari web browser.

References (3)

Core 3

Scores

CVSS v3 3.5
EPSS 0.0036
EPSS Percentile 58.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-20 CWE-79
Status published
Products (1)
nextcloud/openid_connect_user_backend < 1.2.1
Published Nov 25, 2022
Tracked Since Feb 18, 2026