CVE-2024-10463: Mozilla Firefox

Medium severity, CVSS 6.5. EPSS: 0.7% chance of exploitation in the next 30 days.

Video frames could have been leaked between origins in some situations. This vulnerability affects Firefox < 132, Firefox ESR < 128.4, Firefox ESR < 115.17, Thunderbird < 128.4, and Thunderbird < 132.

Affected products

• Mozilla Firefox: before 115.17.0 (fixed in 115.17.0); before 132.0 (fixed in 132.0); from 128.1.0, before 128.4.0 (fixed in 128.4.0)
• Mozilla Thunderbird: before 128.4.0 (fixed in 128.4.0); from 129.0, before 132.0 (fixed in 132.0)

Published 2024-10-29. Last modified 2026-06-17.