Mozilla · Thunderbird · CVE-2026-92031
**Name of the Vulnerable Software and Affected Versions**
Firefox versions prior to 156
Firefox ESR versions prior to 140.16
Firefox ESR versions prior to 153.3
Thunderbird versions prior to 156
Thunderbird versions prior to 140.16
Thunderbird versions prior to 153.3
**Description**
An information disclosure issue exists within the Graphics: ImageLib component.
**Recommendations**
Update Firefox to version 156.
Update Firefox ESR to version 140.16.
Update Firefox ESR to version 153.3.
Update Thunderbird to version 156.
Update Thunderbird to version 140.16.
Update Thunderbird to version 153.3.