CVE-2021-23986

Katalog CVE

CVSS 6.5 · Medium EPSS 0,43%

Kerentanan Origin Validation Error pada mozilla firefox. Skor CVSS 3.1 6.5 (Medium) menurut NVD.

Deskripsi (NVD)

A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87.

Rincian

Terbit di NVD

31 Maret 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-346: Origin Validation Error

EPSS (30 hari)

0,43% peluang dieksploitasi; lebih tinggi dari 35,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 issue tracking · permissions required · advisory vendor
• https://www.mozilla.org/security/advisories/mfsa2021-10/ advisory vendor