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.
The Web Request API in Whale browser before 3.12.129.18 allowed to deny access to the extension store or redirect to any URL when users access the store.
Whale Bridge, a default extension in Whale browser before 3.12.129.18, allowed to receive any SendMessage request from the content script itself that could lead to controlling Whale Bridge if the rendering process compromises.
Whale browser before 3.12.129.18 allowed extensions to replace JavaScript files of the HWP viewer website which could access to local HWP files. When the HWP files were opened, the replaced script could read the files.
Whale Browser before 1.3.48.4 displays no URL information but only a title of a web page on the browser's address bar when visiting a non-http page, which allows an attacker to display a malicious web page with a fake domain name.
Whale Browser before 1.0.41.8 displays no URL information but only a title of a web page on the browser's address bar when visiting a blank page, which allows an attacker to display a malicious web page with a fake domain name.
The path of Whale update service was unquoted in NAVER Whale before 1.0.40.7. This vulnerability can be used for persistent privilege escalation if it's available to create an executable file with System privilege by other vulnerable applications.