CVE-2026-3846

6.5 mediumEPSS 0.1%

Medium (6.5) in mozilla firefox. EPSS 0.1% chance of exploitation in the next 30 days.

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

Severity

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-31)
CWE: CWE-346
Published: 2026-03-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19