SecuriTricks - CVE-2026-0256

Description

A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store a JavaScript payload using the web interface. This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW and Prisma® Access are not impacted by this vulnerability.

Product(s) Impacted

Vendor	Product	Versions
Palo Alto Networks	Pan-os Panorama Pa-series Vm-series	* * * *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-79

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

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	palo_alto_networks	pan-os	/	/	/	/	/	/	/	/
a	palo_alto_networks	panorama	/	/	/	/	/	/	/	/
a	palo_alto_networks	pa-series	/	/	/	/	/	/	/	/
a	palo_alto_networks	vm-series	/	/	/	/	/	/	/	/

References

https://security.paloaltonetworks.com/CVE-2026-0256

CVSS Score

4.4 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: HIGH
User Interaction: PASSIVE
Scope:
Confidentiality Impact: LOW
Integrity Impact: HIGH
Availability Impact: NONE
Exploit Maturity: UNREPORTED

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber

View Vector String

Timeline

Published: May 13, 2026, 7:17 p.m.
Last Modified: May 14, 2026, 4:21 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

[email protected]

CVE-2026-0256