title: PAN-OS: Reflected Cross-Site Scripting (XSS) Vulnerability in Captive Portal Authentication
description: A reflected cross-site scripting (XSS) vulnerability in the Captive Portal feature of Palo Alto Networks PAN-OS software enables execution of malicious JavaScript (in the context of an authenticated Captive Portal user’s browser) if a user clicks on a malicious link, allowing phishing attacks that could lead to credential theft.
problem types: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
affected:
{
defaultStatus: unaffected
product: PAN-OS
vendor: Palo Alto Networks
versions:
changes: [at: 8.1.24, status: unaffected], lessThan: 8.1.24, status: affected, version: 8.1, versionType: custom
changes: [at: 9.0.17, status: unaffected], lessThan: 9.0.17, status: affected, version: 9.0, versionType: custom
changes: [at: 9.1.13, status: unaffected], lessThan: 9.1.13, status: affected, version: 9.1, versionType: custom
changes: [at: 10.0.11, status: unaffected], lessThan: 10.0.11, status: affected, version: 10.0, versionType: custom
changes: [at: 10.1.3, status: unaffected], lessThan: 10.1.3, status: affected, version: 10.1, versionType: custom
status: unaffected, version: 10.2
status: unaffected, version: 11.0
status: unaffected, version: 11.1
}
{
defaultStatus: unaffected
product: Prisma Access
vendor: Palo Alto Networks
versions:
status: unaffected, version: All
}
{
defaultStatus: unaffected
product: Cloud NGFW
vendor: Palo Alto Networks
versions:
status: unaffected, version: All
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: NONE
baseScore: 4.3
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: LOW
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
version: 3.1
]
format: CVSS
scenarios: GENERAL
exploits: Palo Alto Networks is not aware of any malicious exploitation of this issue.
solutions: This issue is fixed in PAN-OS 8.1.24, PAN-OS 9.0.17, PAN-OS 9.1.13, PAN-OS 10.0.11, PAN-OS 10.1.3, and all later PAN-OS versions.
workarounds: Customers with a Threat Prevention subscription can block attacks for this vulnerability by enabling Threat ID 93070 (Applications and Threats content update 8810).