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CVE

CWE

Training

CVE-2022-39338

Published: Nov 25, 2022

Modified: Apr 23, 2025

PUBLISHED

CVSS v3.1

3.5

LOW

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.

Vendor	Product	Versions
nextcloud	security-advisories	affected `< 1.2.1`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57

https://github.com/nextcloud/user_oidc/pull/496

https://hackerone.com/reports/1687410

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