PA-Series

Palo Alto Networks has disclosed multiple low-severity cross-site scripting (XSS) vulnerabilities, CVE-2026-0279, in PAN-OS software affecting the User-ID Authentication Portal, GlobalProtect gateway/portal features, and Clientless VPN, which could allow a malicious unauthenticated user to inject and execute JavaScript in a victim's browser.

An information disclosure vulnerability (CVE-2026-0281) in Palo Alto Networks PAN-OS software allows an unauthenticated attacker to obtain web session tokens via user interaction with a malicious link, potentially leading to unauthorized access to the management interface.

An unauthenticated attacker with network access to the management web interface of Palo Alto Networks PAN-OS software can exploit CVE-2026-0282, a file deletion vulnerability, to delete files from a temporary directory, impacting PA-Series and VM-Series firewalls, and Panorama appliances.

CVE-2026-0265 is an authentication bypass vulnerability in Palo Alto Networks PAN-OS when Cloud Authentication Service (CAS) is enabled, allowing an unauthenticated attacker with network access to bypass authentication controls, impacting confidentiality, integrity, and availability.