Cubecart 6.4.2 allows Session Fixation. The application does not generate a new session cookie after the user is logged in. A malicious user is able to create a new session cookie value and inject it to a victim. After the victim logs in, the injected cookie becomes valid, giving the attacker access to the user's account through the active session.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-33394
• cubecart/v6@aac7b3a
• https://github.com/xoffense/POC/blob/main/Session%20Fixation%20in%20Cubecart%206.4.2.md