CVE-2026-3846

Description

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

Affected Platforms

Weakness Type

CWE-346

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=2018400
• https://www.mozilla.org/security/advisories/mfsa2026-19/