CVE-2026-6757

Invalid pointer in the JavaScript: WebAssembly component

Medium · published April 21, 2026

CVSS v3.1
6.3
EPSS
0%
Percentile
19.7
In the wild
Unconfirmed
What it is

Invalid pointer in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00282 · 19.7th percentile
Published
2026-04-21T12:40Z
EPSS history
Timeline
  • 21 APR 12:40Z
    Invalid pointer in the JavaScript: WebAssembly component
    cvelistv5