CVE-2022-39338: nextcloud openid connect user backend

csirt@kutim:~/threat-intel/cve/CVE-2022-39338

CVSS 5.4 · Medium EPSS 0,63%

Kerentanan Improper Input Validation pada nextcloud openid connect user backend. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD: 25 November 2022
Terakhir diubah: 17 Juni 2026
Status NVD: Modified
CVSS 3.1: 5.4 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-20: Improper Input Validation
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
EPSS (30 hari): 0,63% peluang dieksploitasi; lebih tinggi dari 48,9% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
nextcloud	openid connect user backend	Semua versi sebelum 1.2.1

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/nextcloud/user_oidc/pull/496 patch · advisory pihak ketiga
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5fpw-795h-rg57 advisory pihak ketiga
https://hackerone.com/reports/1687410 permissions required · advisory pihak ketiga

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:10 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.