VULNERABILITY INTELLIGENCE

CVE-2021-44164

CVSS score9.8 CRITICAL
EPSS probability2.12%
CISA KEVNot currently listed
Published2021-12-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Chain Sea ai chatbot system’s file upload function has insufficient filtering for special characters in URLs, which allows a remote attacker to by-pass file type validation, upload malicious script and execute arbitrary code without authentication, in order to take control of the system or terminate service.

Weakness classification

  • twcert@cert.org.tw: CWE-434

Primary references