CVE-2026-0279
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*range: >=10.2.0,<11.1.16
- (no CPE)
Patches
Vulnerability mechanics
References
2News mentions
2- New InfraTrust report reveals infrastructure flaws admins should patch firstBleepingComputer · Jul 22, 2026
- Palo Alto PAN-OS: Ten Vulnerabilities Disclosed Together, Including High-Severity Code Execution FlawVypr Intelligence · Jul 8, 2026