Riskcovery

CVE-2026-0256

PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface

State
Published
Severity
4.4 Medium
Published
May 13, 2026
Updated
Oct 15, 2026
Reserved
Nov 3, 2025

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
4.04.4 MediumCVSS: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/AU:N/R:U/V:D/RE:M/U:Amberpalo_alto

Weaknesses

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

ProductVersions
Cloud NGFWPalo Alto Networks
  • AllNot affected
PAN-OSPalo Alto Networks
  • 12.1.0 to before 12.1.7Affectedfrom 12.1.7Not affectedfrom 12.1.4-h5Not affected
  • 11.2.0 to before 11.2.12Affectedfrom 11.2.12Not affectedfrom 11.2.10-h6Not affectedfrom 11.2.7-h13Not affectedfrom 11.2.4-h17Not affected
  • 11.1.0 to before 11.1.15Affectedfrom 11.1.15Not affectedfrom 11.1.13-h5Not affectedfrom 11.1.10-h25Not affectedfrom 11.1.7-h6Not affectedfrom 11.1.6-h32Not affectedfrom 11.1.4-h33Not affected
  • 10.2.0 to before 10.2.18-h6Affectedfrom 10.2.18-h6Not affectedfrom 10.2.16-h7Not affectedfrom 10.2.13-h21Not affectedfrom 10.2.10-h36Not affectedfrom 10.2.7-h34Not affected
Prisma AccessPalo Alto Networks
  • AllNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.