CVE-2025-63639

Name: CVE-2025-63639
Creator: NVD / NIST
Published: 2025-11-07T20:15:38.113+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2025-63639 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. The chat feature in the application Sourcecodester FAQ Bot with AI Assistant v1.0 is vulnerable to Cross-Site Scripting (XSS) due to improper handling of user-supplied input. An attacker can inject malicious HTML or JavaScript into chat messages, which executes in the browser of any user viewing the conversation.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

The chat feature in the application Sourcecodester FAQ Bot with AI Assistant v1.0 is vulnerable to Cross-Site Scripting (XSS) due to improper handling of user-supplied input. An attacker can inject malicious HTML or JavaScript into chat messages, which executes in the browser of any user viewing the conversation.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.19%

9.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Remyandrade	Faq Bot With Ai Assistant	1.0

References

https://github.com/ChuckBartowski7/Vulnerability-Research/blob/main/CVE-2025-63639/README.mdExploit, Mitigation, Third Party Advisory
https://www.sourcecodester.com/javascript/18413/faq-bot-ai-assistant-using-html-css-and-javascript-source-code.htmlProduct

Timeline

Published: Nov 7, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-63639?

How severe is CVE-2025-63639?

CVE-2025-63639 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2025-63639?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-63639?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST