CVE-2026-0279

MediumCVSS 6.1/10Last modified Aug 11, 2026

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.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

VendorProductVersions
Palo Alto NetworksCloud NGFW—
Palo Alto NetworksPAN-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
Palo Alto NetworksPrisma Access>= 12.1.0, < 12.1.8; 11.2.0; 10.2.0
SiemensRUGGEDCOM APE1808< *

References

Timeline

Published
Jul 9, 2026
Last modified
Aug 11, 2026
NVD status
Modified

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CVE-2026-0279: Medium severity, CVSS 6.1 | Vulnix