CVE-2026-0256
PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | palo alto networks |
| Product | cloud ngfw |
| Published | May 13, 2026 |
| Last Updated | May 13, 2026 |
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Affected Versions
Palo Alto Networks / Cloud NGFW
All versions affected Palo Alto Networks / PAN-OS
12.1.0 < 12.1.7 11.2.0 < 11.2.12 11.1.0 < 11.1.15 10.2.0 < 10.2.18-h6
Palo Alto Networks / Prisma Access
All versions affected References
Credits
Palo Alto Networks thanks our internal security research teams for discovering and reporting this issue.