CVE-2026-2783

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component

Medium · published February 24, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
39.7
In the wild
Unconfirmed
What it is

Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00471 · 39.7th percentile
Published
2026-02-24T13:33Z
EPSS history
Timeline
  • 24 FEB 13:33Z
    Information disclosure due to JIT miscompilation in the JavaScript Engine: JIT component
    cvelistv5