CVE-2026-19543 Missing authorization in Common Licensing
Attackers can bypass client-side validation by modifying requests to submit unauthorized values, leading to unintended application behavior in IBM License Key Server tools.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19543?
CVE-2026-19543 is a medium-severity missing authorization vulnerability in IBM Common Licensing, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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 performs input validation exclusively on the client side and fails to enforce the same restrictions on the server side. An attacker can modify requests to bypass validation controls and submit unauthorized values, potentially resulting in unintended application behavior.
Weakness: CWE-20
Which versions are affected by CVE-2026-19543?
How do I fix CVE-2026-19543?
No fix has been published for CVE-2026-19543 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-19543 being exploited?
There is no known exploitation of CVE-2026-19543 in the wild and no public exploit code.
Sources
Also known as GHSA-7q7r-rggc-8hm5.