CVE-2026-0885

Use-after-free in the JavaScript: GC component

Medium · published January 13, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
33.5
In the wild
Unconfirmed
What it is

Use-after-free in the JavaScript: GC component. This vulnerability was fixed in Firefox 147, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00404 · 33.5th percentile
Published
2026-01-13T13:30Z
EPSS history
Timeline
  • 13 JAN 13:30Z
    Use-after-free in the JavaScript: GC component
    cvelistv5