CVE-2024-5688: Mozilla Firefox

High severity, CVSS 8.1. EPSS: 1.1% chance of exploitation in the next 30 days.

If a garbage collection was triggered at the right time, a use-after-free could have occurred during object transplant. This vulnerability affects Firefox < 127, Firefox ESR < 115.12, and Thunderbird < 115.12.

Affected products

• Mozilla Firefox: before 115.12 (fixed in 115.12); before 127.0 (fixed in 127.0)
• Mozilla Thunderbird: before 115.12 (fixed in 115.12)

Published 2024-06-11. Last modified 2026-06-17.