VULNERABILITY INTELLIGENCE

CVE-2026-27660

CVSS score7.5 HIGH

EPSS probability0.74%

CISA KEVNot currently listed

Published2026-07-03

Last modified2026-10-25

Description

Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.