Is CVE-2021-44163 actively exploited?

No active exploitation of CVE-2021-44163 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-44163 be exploited remotely?

Yes. CVE-2021-44163 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-44163?

CVE-2021-44163 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2021-44163

MEDIUM

CVE-2021-44163

CWE-79Published: December 20, 2021· Updated: Jun 17, 2026

6.1

CVSS v3.1

Official Description

Chain Sea ai chatbot backend has improper filtering of special characters in URL parameters, which allows a remote attacker to perform JavaScript injection for XSS (reflected Cross-site scripting) attack without authentication.

NVD Source

Technical Analysis

CVE-2021-44163 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.