CVE-2026-19646: IBM Common Licensing

Critical severity, CVSS 9.1. EPSS: 0.4% chance of exploitation in the next 30 days.

IBM Common Licensing Agent 9.0, Agent 9.0.0.1, Agent 9.0.0.2, ART 9.0, ART 9.0.0.1, and ART 9.0.0.2 could allow a remote attacker to redirect users to an arbitrary domain due to improper validation of the HTTP Host header.

Affected products

• IBM Common Licensing

Published 2026-09-10. Last modified 2026-09-11.