CVE-2021-44162: Chinasea Qb Smart Service Robot

High severity, CVSS 7.5. EPSS: 1.7% chance of exploitation in the next 30 days.

Chain Sea ai chatbot system’s specific file download function has path traversal vulnerability. The function has improper filtering of special characters in URL parameters, which allows a remote attacker to download arbitrary system files without authentication.

Affected products

• Chinasea Qb Smart Service Robot: affected versions not specified

Published 2021-12-20. Last modified 2026-06-17.