CVE-2026-8390

HIGH

Use-after-free in the JavaScript: WebAssembly component

Title source: cna
STIX 2.1

Description

Use-after-free in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150.0.3.

References (2)

Core 2

Scores

CVSS v3 7.3
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:L/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-416
Status published
Products (2)
mozilla/firefox < 150.0.3
Mozilla/Firefox 150.0.3
Published May 12, 2026
Tracked Since May 12, 2026