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

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Mar 10, 2026 · NIST NVD

   Detected

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

2. Jun 17, 2026 · NIST NVD

   Updated

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

Affected

• cpe mozilla/firefoxversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-3846

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-3846

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

  nvd.nist.gov

References

• Permissions Required · bugzilla.mozilla.org
• Vendor Advisory · mozilla.org