PT-2026-40753 · Palo Alto Networks · Cloud Ngfw+2

Published 2026-05-13 · Updated 2026-05-13 · CVE-2026-0256

NVD

CVSS v4.0

4.4

Medium

Base vector

AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber

A stored 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 impacted by this vulnerability.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-0256

Affected Products

Cloud Ngfw

Pan-Os

Prisma Access

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-0256 · Security Note
• https://security.paloaltonetworks.com/CVE-2026-0256 · Vendor Advisory