CVE-2026-100805

Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 157 Firefox versions prior to 157

Description A race condition leads to a use-after-free issue within the Audio/Video component. A race condition occurs when the timing or order of events affects the correctness of the software, while use-after-free happens when a program continues to use a pointer after it has been freed, potentially leading to crashes or arbitrary code execution.

Recommendations Update Thunderbird to version 157. Update Firefox to version 157.