CVE-2023-25729

HIGH

Firefox < 110.0, Firefox ESR < 102.8, Thunderbird < 102.8 - Incorrect Authorization via ExpandedPrincipals

Title source: llm
STIX 2.1

Description

Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with software already installed on the system. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

References (4)

Core 4

Scores

CVSS v3 8.8
EPSS 0.0012
EPSS Percentile 31.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-863
Status published
Products (3)
mozilla/firefox < 110.0
mozilla/firefox_esr < 102.8
mozilla/thunderbird < 102.8
Published Jun 02, 2023
Tracked Since Feb 18, 2026