CVE-2021-39222

Katalog CVE

CVSS 6.1 · Medium EPSS 1,1%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada nextcloud talk. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Talk application was vulnerable to a stored Cross-Site Scripting (XSS) vulnerability. For exploitation, a user would need to right-click on a malicious file and open the file in a new tab. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. It is recommended that the Nextcloud Talk application is upgraded to patched versions 10.0.7, 10.1.4, 11.1.2, 11.2.0 or 12.0.0. As a workaround, use a browser that has support for Content-Security-Policy.

Rincian

Terbit di NVD

15 November 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-434: Unrestricted Upload of File with Dangerous Type

EPSS (30 hari)

1,1% peluang dieksploitasi; lebih tinggi dari 64,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xhxq-f4vg-jw5g advisory pihak ketiga
• https://github.com/nextcloud/spreed/pull/542 advisory pihak ketiga
• https://hackerone.com/reports/1135481 permissions required · advisory pihak ketiga