The devtools API in Whale browser before 3.12.129.18 allowed extension developers to inject arbitrary JavaScript into the extension store web page via devtools.inspectedWindow, leading to extensions downloading and uploading when users open the developer tool.
Severity
CVSS 3.1
6.1 medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS
0.6% chance of exploitation in the next 30 days; higher than 47% of CVEs (scores of 2026-10-31)