CVE-2026-12330

Incorrect boundary conditions in the Internationalization component

Medium · published June 16, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
5.4
In the wild
Unconfirmed
What it is

Incorrect boundary conditions in the Internationalization component. This vulnerability was fixed in Firefox ESR 140.12, Firefox ESR 115.37, and Thunderbird 140.12.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00164 · 5.4th percentile
Published
2026-06-16T11:53Z
EPSS history
Timeline
  • 16 JUN 11:53Z
    Incorrect boundary conditions in the Internationalization component
    cvelistv5