CVE-2026-19646 Open redirect in Common Licensing
Remote attackers can redirect users to arbitrary domains via improper HTTP Host header validation in IBM License Key Server tools.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19646?
CVE-2026-19646 is a critical vulnerability in IBM Common Licensing, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, 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 could allow a remote attacker to redirect users to an arbitrary domain due to improper validation of the HTTP Host header.
Weakness: CWE-1149
Which versions are affected by CVE-2026-19646?
How do I fix CVE-2026-19646?
No fix has been published for CVE-2026-19646 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-19646 being exploited?
There is no known exploitation of CVE-2026-19646 in the wild and no public exploit code.
Sources
Also known as GHSA-4qf7-45mf-9g63.