CVE-2021-38497

MEDIUM

Firefox < 93, Thunderbird < 91.2, Firefox ESR < 91.2 - CSRF

Title source: llm
STIX 2.1

Description

Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. This vulnerability affects Firefox < 93, Thunderbird < 91.2, and Firefox ESR < 91.2.

References (4)

Core 4
Core References
Permissions Required, Vendor Advisory x_refsource_misc
https://bugzilla.mozilla.org/show_bug.cgi?id=1726621

Scores

CVSS v3 6.5
EPSS 0.0020
EPSS Percentile 41.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Details

CWE
CWE-346
Status published
Products (3)
mozilla/firefox < 93.0
mozilla/firefox_esr < 91.2
mozilla/thunderbird < 91.2
Published Nov 03, 2021
Tracked Since Feb 18, 2026