CVE-2026-0234: Palo Alto Networks Cortex Xsiam

Critical severity, CVSS 9.1. EPSS: 0.2% chance of exploitation in the next 30 days.

An improper verification of cryptographic signature vulnerability exists in Cortex XSOAR and Cortex XSIAM platforms during integration of Microsoft Teams that enables an unauthenticated user to access and modify protected resources.

Affected products

• Palo Alto Networks Cortex Xsiam: from 1.5.0, before 1.5.52 (fixed in 1.5.52)
• Palo Alto Networks Cortex Xsoar: from 1.5.0, before 1.5.52 (fixed in 1.5.52)

Published 2026-04-13. Last modified 2026-07-07.