CVE-2026-0279PAN-OS: Multiple Cross-Site Scripting (XSS) Vulnerabilities

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.

1.3 LOWEPSS 0.75%Not in KEVNVD: Modified

Last updated: 2026-10-15 01:11 UTC

OverviewCVSS details

1.3LOWCVSS 4.0

Score source: palo_alto (CNA)
NVD status: Modified
Published: Jul 9, 2026
Assigner: palo_alto

Affected

Cloud NGFW (Palo Alto Networks)

+2 more products →

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —
SSVC: Exploitation none · Automatable no · Impact partial

EPSS · FIRST, scored Nov 8

0.75%chance of exploitation in 30 days

Higher than 55.22% of CVEs

CVSS 4.0 · palo_alto (CNA)

1.3Low

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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

Attack vector: Network
Attack complexity: Low
Attack requirements: None
Privileges required: None
User interaction: Passive
Confidentiality impact: Low
Integrity impact: Low
Availability impact: None
Confidentiality (other systems): None
Integrity (other systems): None
Availability (other systems): None

CVSS 4.0 · palo_alto (CNA)

1.2Low

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/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

Attack vector: Adjacent
Attack complexity: Low
Attack requirements: None
Privileges required: None
User interaction: Passive
Confidentiality impact: Low
Integrity impact: Low
Availability impact: None
Confidentiality (other systems): None
Integrity (other systems): None
Availability (other systems): None

CVSS 4.0 · palo_alto (CNA)

0.4Low

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

Attack vector: Adjacent
Attack complexity: Low
Attack requirements: None
Privileges required: Low
User interaction: Passive
Confidentiality impact: Low
Integrity impact: Low
Availability impact: None
Confidentiality (other systems): None
Integrity (other systems): None
Availability (other systems): None

CVSS 3.1 · NVD

6.1Medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Changed
Confidentiality impact: Low
Integrity impact: Low
Availability impact: None

NVD status: Modified

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
1.3	LOW	4.0palo_alto (CNA)	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
1.2	LOW	4.0palo_alto (CNA)	CVSS:4.0/AV:A/AC:L/AT:N/PR:N/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
0.4	LOW	4.0palo_alto (CNA)	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
6.1	MEDIUM	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CVE ID: CVE-2026-0279
Status: Modified
Assigner (CNA): palo_alto
Published: Jul 9, 2026
Last modified: 2026-10-15 01:11 UTC
Weaknesses: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-09 08:16 UTC.