CVE-2024-1547: Debian Linux

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

Through a series of API calls and redirects, an attacker-controlled alert dialog could have been displayed on another website (with the victim website's URL shown). This vulnerability affects Firefox < 123, Firefox ESR < 115.8, and Thunderbird < 115.8.

Affected products

• Debian Debian Linux: version 10.0 only
• Mozilla Firefox: before 115.8.0 (fixed in 115.8.0); before 123.0 (fixed in 123.0)
• Mozilla Thunderbird: before 115.8.0 (fixed in 115.8.0)

Published 2024-02-20. Last modified 2026-06-17.