CVE-2025-63639: The chat feature in the application Sourcecodester FAQ Bot with AI Assistant v1.0 is vulnerable to Cross-Site

Routine

MEDIUM 6.1DOWNGRADE

CVE-2025-63639 is a medium-severity flaw (CVSS 6.1) affecting faq bot with ai assistant. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.2% (top 85%)
CISA exploited list	No
Weakness	CWE-79
Published	2025-11-07
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: remyandrade

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-07 20:15 UTCPublished CVE record published
2026-06-17 09:53 UTCUpdated Record last modified

remyandrade faq bot with ai assistant DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy faq-bot-with-ai-assistant || rpm -q faq-bot-with-ai-assistant || faq-bot-with-ai-assistant --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison faq-bot-with-ai-assistant sudo apt install faq-bot-with-ai-assistant=<VERSION_BEFORE_1.0> sudo apt-mark hold faq-bot-with-ai-assistant

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list faq-bot-with-ai-assistant sudo dnf downgrade faq-bot-with-ai-assistant-<VERSION_BEFORE_1.0> sudo dnf versionlock add faq-bot-with-ai-assistant

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-63639?

faq bot with ai assistant: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-63639 being exploited?

CVE-2025-63639 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-63639 affect?

CVE-2025-63639 affects faq bot with ai assistant. Severity is medium (CVSS 6.1). 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 mes

How urgent is CVE-2025-63639?

Priority 30/100. Public exploit reference

References

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