CVE-2026-0266

published 2026-06-10

CVE-2026-0266: A cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload…

Priority P4 21 medium 4.8 CVSS 3.1

AV N AC L PR H UI R S C C L I L A N

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

10 ranges

Vendor	Product	Version range	Fixed in
palo_alto_networks	pan-os	—	—
palo_alto_networks	pan-os	>= 11.1.0 < 11.1.14	11.1.14
palo_alto_networks	pan-os	>= 11.2.0 < 11.2.11	11.2.11
palo_alto_networks	pan-os	>= 12.1.0 < 12.1.5	12.1.5
paloalto	cloud_ngfw	—	—
paloalto	pan-os	—	—
paloalto	prisma_access	—	—
paloaltonetworks	pan-os	>= 10.2.0 < 11.1.14	11.1.14
paloaltonetworks	pan-os	>= 11.2.0 < 11.2.11	11.2.11
paloaltonetworks	pan-os	>= 12.1.0 < 12.1.5	12.1.5

CVSS provenance

nvd v3.1 4.8 MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

nvd v4.0 1.1 LOW CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/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

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CWE-79