CVE-2021-43531

Katalog CVE

CVSS 4.3 · Medium EPSS 0,34%

Kerentanan Origin Validation Error pada mozilla firefox. Skor CVSS 3.1 4.3 (Medium) menurut NVD.

Deskripsi (NVD)

When a user loaded a Web Extensions context menu, the Web Extension could access the post-redirect URL of the element clicked. If the Web Extension lacked the WebRequest permission for the hosts involved in the redirect, this would be a same-origin-violation leaking data the Web Extension should have access to. This was fixed to provide the pre-redirect URL. This is related to CVE-2021-43532 but in the context of Web Extensions. This vulnerability affects Firefox < 94.

Rincian

Terbit di NVD

8 Desember 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-346: Origin Validation Error

EPSS (30 hari)

0,34% peluang dieksploitasi; lebih tinggi dari 25,6% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.mozilla.org/show_bug.cgi?id=1659155 issue tracking · permissions required · advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2021-48/ advisory vendor