Not on CISA's list of exploited flaws, and not in the news we track.
9.8of 10, critical
Reading the vendor advisory
Fix it in your code
Each opens with a short prompt that points at Global Hack Map's public runbook for CVE-2026-15266. Nothing runs until you send it.
IBM Concert 1.0 through 3.0.1.1 contains components that allow potentially unsafe command execution, which could be exploited to run arbitrary system commands on the host.
You are affected if
The fix