CVE-2026-2796

CRITICAL

Firefox <148 - Memory Corruption

Title source: llm

Description

JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

Exploits (2)

nomisec WORKING POC
by WostGit · poc
https://github.com/WostGit/CVE-2026-2796
nomisec WORKING POC
by WostGit · poc
https://github.com/WostGit/cve-2026-2796-repro

References (3)

Scores

CVSS v3 9.8
EPSS 0.0003
EPSS Percentile 8.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-843
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