VulnerabilityAnalyzed

CVE-2025-63639

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.

MEDIUM 6.1EPSS 0.24%

Does this matter?

Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.24% probability · 15th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Weakness: CWE-79
Affected: remyandrade/faq bot with ai assistant
Source: cve@mitre.org

EPSS trend

EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.