CVE-2026-0256
Medium
Description
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.
SeverityMedium
CVSS4.8
Exploit probability—
Product
Paloaltonetworks Pan-os
PublishedMay 13, 2026
First seenMay 13, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- paloaltonetworks pan-os10.2.7, 10.2.10, 10.2.13, 10.2.16, 11.1.4, 11.1.6, 11.1.10, 11.1.13, 11.2.4, 11.2.7, 11.2.10, 12.1.4, 12.1.7 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| paloaltonetworks pan-os | v < 10.2.7, 10.2.8 ≤ v < 10.2.10, 10.2.11 ≤ v < 10.2.13, 10.2.14 ≤ v < 10.2.16, 10.2.7, 10.2.10, 10.2.13, 10.2.16, 10.2.17, 10.2.18, 11.1.0 ≤ v < 11.1.4, 11.1.5 ≤ v < 11.1.6, 11.1.8 ≤ v < 11.1.10, 11.1.11 ≤ v < 11.1.13, 11.1.4, 11.1.6, 11.1.7, 11.1.10, 11.1.13, 11.1.14, 11.2.0 ≤ v < 11.2.4, 11.2.5 ≤ v < 11.2.7, 11.2.8 ≤ v < 11.2.10, 11.2.4, 11.2.7, 11.2.10, 11.2.11, 12.1.0 ≤ v < 12.1.4, 12.1.5 ≤ v < 12.1.7, 12.1.4 | 10.2.7, 10.2.10, 10.2.13, 10.2.16, 11.1.4, 11.1.6, 11.1.10, 11.1.13, 11.2.4, 11.2.7, 11.2.10, 12.1.4, 12.1.7 |
| siemens ruggedcom_ape1808_firmware | No range specified | — |
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