CVE-2023-5725

MEDIUM

Firefox < 119.0 - Sensitive Data Exposure via Malicious WebExtension URL Opening

Title source: llm
STIX 2.1

Description

A malicious installed WebExtension could open arbitrary URLs, which under the right circumstance could be leveraged to collect sensitive user data. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

Scores

CVSS v3 4.3
EPSS 0.0042
EPSS Percentile 61.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

Status published
Products (5)
debian/debian_linux 10.0
debian/debian_linux 11.0
mozilla/firefox < 119.0
mozilla/firefox_esr < 115.4
mozilla/thunderbird < 115.4.1
Published Oct 25, 2023
Tracked Since Feb 18, 2026