French software company Vates VMS has warned of a critical security vulnerability in Xen Orchestra that it said is being actively exploited in the wild.

The authentication bypass flaw, which does not yet have a CVE identifier, is tracked as VSA-2026-062.

„REST cookie parsing turns authenticationToken=j:%7B%7D into {},“ Vates VMS said in an alert. „REST authentication passes that object to the
https://thehackernews.com/2026/11/hackers-exploit-critical-xen-orchestra.html