CVE-2026-3846

Same-origin policy bypass in the CSS Parsing and Computation component

Medium · published March 10, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
5.9
In the wild
Unconfirmed
What it is

Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 148.0.2.

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:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00169 · 5.9th percentile
Published
2026-03-10T15:03Z
EPSS history
Timeline
  • 10 MAR 15:03Z
    Same-origin policy bypass in the CSS Parsing and Computation component
    cvelistv5