CVE-2026-74939-escape-the-mac-n-cheese-box

CVE-2026-74939 — Firefox content→parent privilege escalation Proof of concept for a sandbox escape in Firefox 149.0a1 nightly 2fbc0748c4, pre-fix. A compromised content process forges an IPDL message that makes the parent load a page into a privileged privilegedabout process. This is the stage-2...

Exploit for Improper Isolation or Compartmentalization in Mozilla Firefox

CVE-2026-12295 — srcdoc data on a non-about:srcdoc URI Firefo...

Exploit for Improper Privilege Management in Mozilla Firefox

CVE-2026-74939 — Firefox content→parent privilege escalation...