Mend.io Vulnerability Database
The largest open source vulnerability database
What is a Vulnerability ID?
New vulnerability? Tell us about it!
MSC-2026-5233
Published:May 16, 2026
Updated:May 16, 2026
Three malicious PyPI packages (uuid32-utils, colorinal, termncolor) attributed to the OceanLotus APT group were discovered delivering ZiChatBot malware as part of a supply chain attack. Upon installation, the packages drop and execute a backdoor (terminate.dll on Windows / terminate.so on Linux) that establishes persistence via registry entries or crontab, then communicates with Zulip REST APIs as C2 infrastructure to enable remote control of compromised hosts. The termncolor package served as a concealment layer by importing the malicious colorinal library as a dependency. All versions of these packages are malicious and no safe version exists. It is strongly recommended to immediately remove uuid32-utils, colorinal, and termncolor from all environments and conduct a full incident response investigation.
Do you need more information?
Contact Us
CVSS v4
Base Score:
9.4
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
9.6
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH