CVE-2024-40618
📋 TL;DR
This vulnerability in Whale browser allows attackers to execute malicious JavaScript code due to improper sanitization in a built-in extension. Attackers can exploit this to perform cross-site scripting attacks, potentially compromising user sessions and data. All users running vulnerable versions of Whale browser are affected.
💻 Affected Systems
- Whale Browser
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete browser compromise allowing attackers to steal sensitive data, hijack user sessions, install malware, or perform actions on behalf of the user without their knowledge.
Likely Case
Session hijacking, credential theft, and unauthorized access to user data through cross-site scripting attacks when users visit malicious websites.
If Mitigated
Limited impact if browser sandboxing and other security controls prevent escalation, though XSS attacks could still compromise specific sessions.
🎯 Exploit Status
Exploitation requires user interaction (visiting malicious website) but no authentication. The CWE-79 classification indicates typical XSS exploitation patterns apply.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.26.244.21 and later
Vendor Advisory: https://cve.naver.com/detail/cve-2024-40618.html
Restart Required: Yes
Instructions:
1. Open Whale browser. 2. Click menu (three dots) > Help > About Whale. 3. Browser will automatically check for updates. 4. If update is available, click 'Update' and restart browser when prompted.
🔧 Temporary Workarounds
Disable JavaScript
allDisable JavaScript execution in Whale browser settings to prevent XSS exploitation
Use Content Security Policy
allImplement strict Content Security Policy headers on web applications to mitigate XSS impact
🧯 If You Can't Patch
- Restrict browser usage to trusted websites only
- Implement network-level filtering to block malicious domains and scripts
🔍 How to Verify
Check if Vulnerable:
Check browser version: Open Whale browser > Menu > Help > About Whale. If version is below 3.26.244.21, you are vulnerable.Check Version:
Not applicable - check via browser GUIVerify Fix Applied:
After updating, verify version is 3.26.244.21 or higher in About Whale page.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript execution patterns
- Extension-related errors in browser logs
- Unexpected network requests from browser extensions
Network Indicators:
- Suspicious script loads from untrusted domains
- Unexpected POST/GET requests containing sensitive data
SIEM Query:
Not applicable - browser-specific vulnerability requiring endpoint monitoring