Description
Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript payload.
The security risk posed by this issue is minimized when the management interface and access to the User-ID™ Authentication Portal 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 is not affected by this vulnerability.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Palo Alto Networks | Cloud NGFW | — | All |
| Palo Alto Networks | PAN-OS | 12.1.0 – < 12.1.8, 11.2.0 – < 11.2.13, 11.1.0 – < 11.1.16, 10.2.0 – < 10.2.18-h8 | 12.1.8 |
| Palo Alto Networks | Prisma Access | 12.1.0 – < 12.1.8, 11.2.0, 10.2.0 | 12.1.8 |
Advisories 3
- SSA-104023 SSA-104023: Multiple Vulnerabilities in Palo Alto Networks PAN-OS on RUGGEDCOM APE1808 Devices Siemens ProductCERT · Nov 10, 2026
- NCSC-2026-0227 Kwetsbaarheden verholpen in Palo Alto Networks PAN-OS NCSC-NL (Netherlands) · Jul 13, 2026
- WID-SEC-2026-2261 Palo Alto Networks PAN-OS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 9, 2026
References
- https://security.paloaltonetworks.com/CVE-2026-0279 vendor-advisory