CVE-2026-0256

published 2026-05-13

CVE-2026-0256: A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript…

Priority P4 22 medium 4.4 CVSS 4.0

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.

Affected

7 ranges

Vendor	Product	Version range	Fixed in
palo_alto_networks	pan-os	>= 10.2.0 < 10.2.18-h6	10.2.18-h6
palo_alto_networks	pan-os	>= 11.1.0 < 11.1.15	11.1.15
palo_alto_networks	pan-os	>= 11.2.0 < 11.2.12	11.2.12
palo_alto_networks	pan-os	>= 12.1.0 < 12.1.7	12.1.7
paloalto	cloud_ngfw	—	—
paloalto	pan-os	—	—
paloalto	prisma_access	—	—

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CWE-79