CVE-2026-2804

MEDIUM

Firefox < 148.0 - Use-After-Free in JavaScript WebAssembly Component

Title source: llm
STIX 2.1

Description

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

References (3)

Core 3

Scores

CVSS v3 5.4
EPSS 0.0001
EPSS Percentile 2.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-416
Status published
Products (4)
mozilla/firefox < 148.0
Mozilla/Firefox 148
mozilla/thunderbird < 148.0
Mozilla/Thunderbird 148
Published Feb 24, 2026
Tracked Since Feb 24, 2026