CVE-2020-9449: Justblab Blab! Ax

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

An insecure random number generation vulnerability in BlaB! AX, BlaB! AX Pro, BlaB! WS (client), and BlaB! WS Pro (client) version 19.11 allows an attacker (with a guest or user session cookie) to escalate privileges by retrieving the cookie salt value and creating a valid session cookie for an arbitrary user or admin.

Affected products

• Justblab Blab! Ax: version 19.11 only
• Justblab Blab! Ax Pro: version 19.11 only
• Justblab Blab! Ws: version 19.11 only
• Justblab Blab! Ws Pro: version 19.11 only

Published 2020-02-28. Last modified 2026-06-17.