CVE-2026-0883

MEDIUM

Firefox < 147 and 140.7-140.* - Information Disclosure in Networking Component

Title source: llm
STIX 2.1

Description

Information disclosure in the Networking component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

References (5)

Core 5

Scores

CVSS v3 5.3
EPSS 0.0002
EPSS Percentile 4.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-200
Status published
Products (8)
mozilla/firefox < 140.7.0
mozilla/firefox < 147.0
Mozilla/Firefox 140.7 - 140.*
Mozilla/Firefox 147
mozilla/thunderbird < 140.7.0
mozilla/thunderbird < 147.0
Mozilla/Thunderbird 140.7 - 140.*
Mozilla/Thunderbird 147
Published Jan 13, 2026
Tracked Since Feb 18, 2026