CVE-2026-0279

PAN-OS: Multiple Cross-Site Scripting (XSS) Vulnerabilities

Published Jul 9, 2026 CVSS 4.0 · 0.4 Low EPSS < 1% KEV · Not listed

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

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Palo Alto Networks

Cloud NGFW

unaffected

Version	Status	Constraints
`All`	unaffected	—

Palo Alto Networks

PAN-OS

affected

Version	Status	Constraints
`12.1.0`	affected	< 12.1.8
`11.2.0`	affected	< 11.2.13
`11.1.0`	affected	< 11.1.16
`10.2.0`	affected	< 10.2.18-h8

Palo Alto Networks

Prisma Access

affected

Version	Status	Constraints
`12.1.0`	affected	< 12.1.8
`11.2.0`	affected	—
`10.2.0`	affected	—

Configuration 1 [-]

OR	cpe:2.3:o:paloaltonetworks:pan-os::::::::
	cpe:2.3:o:paloaltonetworks:pan-os::::::::
	cpe:2.3:o:paloaltonetworks:pan-os::::::::

No data.

Vendor Product Versions

Palo Alto Networks

Cloud Ngfw

Version	Status	Scheme	Platform
`[0,*]`	unaffected	generic	—

Palo Alto Networks

Pan-os

Version	Status	Scheme	Platform
`[12.1.0,12.1.8)`	affected	semver	—
`[11.2.0,11.2.13)`	affected	semver	—
`[11.1.0,11.1.16)`	affected	semver	—
`[10.2.0,10.2.18-h8)`	affected	semver	—

Palo Alto Networks

Prisma Access

Version	Status	Scheme	Platform
`[12.1.0,12.1.8)`	affected	semver	—
`11.2.0`	affected	semver	—
`10.2.0`	affected	semver	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.750% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://cert-portal.siemens.com/productcert/html/ssa-104023.html
https://security.paloaltonetworks.com/CVE-2026-0279

History

Aug 11, 2026 4:00 PM Added references View changes

Type	Values Removed	Values Added
References		https://cert-portal.siemens.com/productcert/html/ssa-104023.html

Jul 9, 2026 10:15 PM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Palo Alto Networks cloud Ngfw
Vendors & Products		Palo Alto Networks cloud Ngfw

Jul 9, 2026 8:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Jul 9, 2026 7:15 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
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.
Title		PAN-OS: Multiple Cross-Site Scripting (XSS) Vulnerabilities
First Time appeared		Palo Alto Networks Palo Alto Networks pan-os Palo Alto Networks prisma Access
Weaknesses		CWE-79
CPEs		cpe:2.3:o:palo_alto_networks:pan-os:::::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.0:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:-:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h10:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h11:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h12:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h13:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h14:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h17:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h18:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h1:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h21:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h23:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h26:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h27:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h2:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h30:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h31:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h36:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h37:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h3:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h4:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h5:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h6:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h7:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h8:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.10:h9:::::: cpe:2.3:o:palo_alto_networks:pan-os:10.2.11:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.12:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.13:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.14:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.15:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.16:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.17:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.18:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.1:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.2:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.3:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.4:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.5:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.6:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.7:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.8:::::::* cpe:2.3:o:palo_alto_networks:pan-os:10.2.9:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.0:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.10:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.11:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.12:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.13:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.14:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.15:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.1:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.2:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.3:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.4:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.5:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.6:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.8:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.1.9:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.0:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.10:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.11:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.12:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.1:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.2:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.3:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.4:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.5:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.6:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:-:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h10:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h11:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h12:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h13:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h14:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h15:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h16:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h17:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h1:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h2:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h3:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h4:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h7:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.7:h8:::::: cpe:2.3:o:palo_alto_networks:pan-os:11.2.8:::::::* cpe:2.3:o:palo_alto_networks:pan-os:11.2.9:::::::* cpe:2.3:o:palo_alto_networks:pan-os:12.1.2:::::::* cpe:2.3:o:palo_alto_networks:pan-os:12.1.3:::::::* cpe:2.3:o:palo_alto_networks:pan-os:12.1.4:::::::* cpe:2.3:o:palo_alto_networks:pan-os:12.1.5:::::::* cpe:2.3:o:palo_alto_networks:pan-os:12.1.6:::::::* cpe:2.3:o:palo_alto_networks:pan-os:12.1.7:::::::* cpe:2.3:o:palo_alto_networks:prisma_access::::::::
Vendors & Products		Palo Alto Networks Palo Alto Networks pan-os Palo Alto Networks prisma Access
References		https://security.paloaltonetworks.com/CVE-2026-0279
Metrics		cvssV4_0 `{'score': 0.4, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber'}`