CVE-2026-0266: Palo Alto Networks PAN-OS

Medium severity, CVSS 4.8. EPSS: 0.1% chance of exploitation in the next 30 days.

A cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload using the web interface. This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma® Access are not affected by this vulnerability.

Affected products

• Palo Alto Networks PAN-OS: from 10.2.0, before 11.1.14 (fixed in 11.1.14); from 11.2.0, before 11.2.11 (fixed in 11.2.11); from 12.1.0, before 12.1.5 (fixed in 12.1.5)

Published 2026-06-10. Last modified 2026-07-23.