CVE-2026-2781

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 148 Firefox ESR versions prior to 140.8 Thunderbird versions prior to 148 Thunderbird versions prior to 140.8

Description An integer overflow exists within the Libraries component of NSS. This issue may lead to unexpected behavior or potentially allow for malicious actions.

Recommendations Update Firefox to version 148 or later. Update Firefox ESR to version 140.8 or later. Update Thunderbird to version 148 or later. Update Thunderbird to version 140.8 or later.