CVE-2022-39338CWE-20CWE-79

Stored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidc

Low · published November 25, 2022

CVSS v3.1
3.5
EPSS
1%
Percentile
49.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.5 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00632 · 49.7th percentile
Weaknesses
CWE-20 · Improper Input Validation; CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2022-11-25T00:00Z
EPSS history
Timeline
  • 25 NOV 00:00Z
    Stored cross site scripting (XSS) vulnerability via Authorization Endpoint in user_oidc
    cvelistv5