CVE-2026-4723 PUBLISHED

Use-after-free in the JavaScript Engine component

Assigner: mozilla
Reserved: 23.03.2026 Published: 24.03.2026 Updated: 24.03.2026

Use-after-free in the JavaScript Engine component. This vulnerability affects Firefox < 149.

Product Status

Vendor Mozilla
Product Firefox
Versions
  • affected from unspecified to 149 (excl.)

Credits

  • Evyatar Ben Asher, Keane Lucas, Nicholas Carlini, Newton Cheng, Daniel Freeman, Alex Gaynor, and Joel Weinberger using Claude from Anthropic

References