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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

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

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-07-09 19:16

Updated : 2026-08-11 13:17

NVD link : CVE-2026-0279

Mitre link : CVE-2026-0279

CVE.ORG link : CVE-2026-0279

JSON object : View

Products Affected

paloaltonetworks

pan-os

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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{"at": "10.2.13-h23", "status": "unaffected"}, {"at": "10.2.10-h39", "status": "unaffected"}, {"at": "10.2.7-h36", "status": "unaffected"}], "version": "10.2.0", "lessThan": "10.2.18-h8", "versionType": "custom"}], "defaultStatus": "affected"}, {"vendor": "Palo Alto Networks", "product": "Prisma Access", "versions": [{"status": "affected", "changes": [{"at": "12.1.8", "status": "unaffected"}], "version": "12.1.0", "lessThan": "12.1.8", "versionType": "custom"}, {"status": "affected", "version": "11.2.0", "versionType": "custom"}, {"status": "affected", "version": "10.2.0", "versionType": "custom"}], "defaultStatus": "affected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "RUGGEDCOM APE1808", "versions": [{"status": "affected", "version": "0", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-07-09T19:16:58.717", "references": [{"url": "https://security.paloaltonetworks.com/CVE-2026-0279", "tags": ["Vendor Advisory"], "source": "psirt@paloaltonetworks.com"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-104023.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "psirt@paloaltonetworks.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "Multiple cross site scripting vulnerabilities in the User-ID\u2122 Authentication Portal (aka Captive Portal) service, GlobalProtect\u2122 gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS\u00ae software enables a malicious unauthenticated user to store or execute malicious JavaScript payload.\n\n\nThe security risk posed by this issue is minimized when the management interface and access to the User-ID\u2122 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 .\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW is not affected by this vulnerability."}], "lastModified": "2026-08-11T13:17:49.170", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E2E4ED34-8009-475C-9708-29063E2A734B", "versionEndExcluding": "11.1.16", "versionStartIncluding": "10.2.0"}, {"criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "503005E5-4B00-4710-A393-7589F83BA568", "versionEndExcluding": "11.2.13", "versionStartIncluding": "11.2.0"}, {"criteria": "cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": 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