CVE-2026-0316: PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability (Severity: LOW)
A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute a JavaScript payload using the web interface.
The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .
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 these vulnerabilities.
Other sources
A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute a JavaScript payload using the web interface.
The security risk posed by this issue is minimized when the management interface is restricted to only trusted internal IP addresses according to our recommended best practice deployment guidelines (https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431).
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 these vulnerabilities.
— Palo Alto Networks
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 12.2.4Fixed in 12.1.10-h2Fixed in 11.2.16Fixed in 11.1.16-h3 - Upgrade
Upgrade
Palo Alto Networks PAN-OSto a version that resolves this vulnerability.Fixed in 11.1.16-h3 - Upgrade
Upgrade
Palo Alto Networks PAN-OSto a version that resolves this vulnerability.Fixed in 11.2.16 - Upgrade
Upgrade
Palo Alto Networks PAN-OSto a version that resolves this vulnerability.Fixed in 12.1.10-h2 - Upgrade
Upgrade
Palo Alto Networks PAN-OSto a version that resolves this vulnerability.Fixed in 12.2.4 - Compensating control
Restrict the PAN-OS management interface to only trusted internal IP addresses.
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The attacker must be an authenticated administrator and must be able to use the web interface to store or execute a JavaScript payload.
Which platforms are affected, and which are excluded?
The issue applies to PAN-OS on PA-Series and VM-Series firewalls and on Panorama virtual and M-Series appliances. Cloud NGFW and Prisma Access are not affected.
What can reduce exposure if remediation is not immediately possible?
Restrict the management interface to trusted internal IP addresses, consistent with the vendor's recommended management-access deployment guidance. This minimizes the security risk by limiting who can reach the web interface.