CVE-2025-8349

Cross-Site Scripting (XSS) stored in Tawk Live Chat

Published Oct 20, 2025 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Description
Cross-site Scripting (XSS) stored vulnerability in Tawk Live Chat. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by uploading a malicious PDF with JavaScript payload through the chatbot. The PDF is stored by the application and subsequently displayed without proper sanitisation when other users access it. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.

Remediation

Vendor Solution

No solution has been reported at this time.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Tawk live Chat
CPEs cpe:2.3:a:tawk:live_chat:*:*:*:*:*:*:*:*
Vendors & Products Tawk live Chat
Type Values Removed Values Added
First Time appeared Tawk
Tawk tawk.to Live Chat
Vendors & Products Tawk
Tawk tawk.to Live Chat
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Cross-site Scripting (XSS) stored vulnerability in Tawk Live Chat. This vulnerability allows an attacker to execute JavaScript code in the victim's browser by uploading a malicious PDF with JavaScript payload through the chatbot. The PDF is stored by the application and subsequently displayed without proper sanitisation when other users access it. This vulnerability can be exploited to steal sensitive user data, such as session cookies, or to perform actions on behalf of the user.
Title Cross-Site Scripting (XSS) stored in Tawk Live Chat
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
INCIBE
Published
Updated
Mar 24, 2026, 3:42 PM
Reserved
Jul 30, 2025, 11:11 AM
Status
Deferred
Published
Oct 20, 2025, 10:15 AM
Modified
Oct 8, 2026, 10:10 PM