CVE-2025-57483
📋 TL;DR
This reflected XSS vulnerability in tawk.to chatbox widget v4 allows attackers to inject malicious JavaScript that executes in users' browsers when they visit a specially crafted URL. Any website using the vulnerable tawk.to widget version is affected, potentially compromising user sessions and data.
💻 Affected Systems
- tawk.to chatbox widget
⚠️ 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
Attackers steal user session cookies, perform account takeovers, redirect to phishing sites, or deploy malware through the compromised website.
Likely Case
Session hijacking, credential theft, and defacement of the chat interface through injected content.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Exploitation requires user interaction (clicking malicious link) but is straightforward with public proof-of-concept available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 5 or later
Vendor Advisory: https://github.com/Jainil-89/CVE/blob/main/cve.md
Restart Required: No
Instructions:
1. Update tawk.to widget to version 5 or later. 2. Replace the widget embed code on all affected web pages. 3. Test the updated widget functionality.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources and prevent inline script execution.
Content-Security-Policy: script-src 'self' https://*.tawk.to; object-src 'none';
Input Validation Filter
allAdd server-side validation to sanitize or reject malicious input parameters.
🧯 If You Can't Patch
- Temporarily disable the tawk.to widget until patched.
- Implement WAF rules to block XSS payload patterns in URL parameters.
🔍 How to Verify
Check if Vulnerable:
Inspect webpage source for tawk.to widget version 4 embed code, or test with XSS payload in URL parameters.Check Version:
View page source and search for 'tawk.to' script URL containing version number.Verify Fix Applied:
Confirm widget embed code references version 5+ and test that XSS payloads no longer execute.📡 Detection & Monitoring
Log Indicators:
- Unusual long URL parameters with script tags, alert() calls, or JavaScript in web server logs.
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads.
SIEM Query:
source="web_logs" AND (url="*<script>*" OR url="*javascript:*" OR url="*%3Cscript%3E*")