Site Isolation Vulnerability in Firefox Graphics Component
CVE-2026-16398

Currently unrated

Key Information:

Vendor

Mozilla

Status
Vendor
CVE Published:
21 July 2026

What is CVE-2026-16398?

This vulnerability involves a site isolation flaw within the graphics component of Firefox, which can potentially expose user data to malicious sites. It was effectively addressed in Firefox version 153, ensuring enhanced protection against such threats. Users are urged to update their browsers to mitigate risks associated with this issue.

Affected Version(s)

Firefox 153

References

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

stevej
.