CVE-2021-39221

Katalog CVE

CVSS 5.4 · Medium EPSS 0,52%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada nextcloud contacts. Skor CVSS 3.1 5.4 (Medium) menurut NVD.

Deskripsi (NVD)

Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Contacts application prior to version 4.0.3 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 Contacts application is upgraded to 4.0.3. As a workaround, one may use a browser that has support for Content-Security-Policy.

Rincian

Terbit di NVD

25 Oktober 2021

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

EPSS (30 hari)

0,52% peluang dieksploitasi; lebih tinggi dari 42,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/nextcloud/contacts/pull/2407 advisory pihak ketiga
• https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j6cx-mxqf-f9vc advisory pihak ketiga