CVE intelligence

CVE-2026-0279

Vulnerability intelligence

Published Jul 9, 2026Sources checked Oct 27, 2026

6.1MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2026-0279 and is rated Medium severity with a CVSS score of 6.1. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Palo Alto Networks Security Advisories guidance

Vendor revision: Jul 8, 2026

Vendor remediation details

VERSION MINOR VERSION SUGGESTED SOLUTION Cloud NGFW No action needed. PAN-OS 12.1 12.1.2 through 12.1.7-h* Upgrade to 12.1.8 or later. PAN-OS 11.2 11.2.0 through 11.2.12 Upgrade to 11.2.13 or later. PAN-OS 11.1 11.1.0 through 11.1.15-h* Upgrade to 11.1.16 or later. PAN-OS 10.2 10.2.0 through 10.2* Upgrade to 11.1.16, 11.2.13, 12.1.8 or later. All older Upgrade to a supported fixed version. unsupported PAN-OS versions Prisma Access 12.1 12.1.2 through 12.1.7-h* Upgrade to 12.1.8 or later.* Prisma Access 11.2 11.2.0 through 11.2* Upgrade to 12.1.8 or later.* Prisma Access 10.2 10.2.0 through 10.2* Upgrade to 12.1.8 or later.* * See the note under Product Status for information regarding Prisma Access upgrades.

Vendor-listed releases

Cloud NGFW All
PAN-OS 12.1 >= 12.1.8
PAN-OS 11.2 >= 11.2.13
PAN-OS 11.1 >= 11.1.16
PAN-OS 10.2 None
Prisma Access 12.1 >= 12.1.8*
Prisma Access 11.2 None*
Prisma Access 10.2 None*

CISA KEVNot listedBased on the latest collected catalog

EPSS0.8%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2026-0279?

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.

Source: NVD