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Palo Alto Networks Security AdvisoriesCVE-2026-0308

CVE-2026-0308: PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface

MediumVendor CVSS 4.8 / 10 1 CVE Published Sep 9, 2026 at 4:00 PM UTC

Summary

A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute 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 affected by this vulnerability.

Products covered

  • Cloud NGFW

  • PAN-OS

  • Prisma Access

  • PAN-OS 12.2

  • PAN-OS 12.1

  • PAN-OS 11.2

  • PAN-OS 11.1

Remediation

Version

Minor Version

Suggested Solution

Cloud NGFW

No action needed.

PAN-OS 12.2

No action needed.

PAN-OS 12.1

12.1.2 through 12.1.9

Upgrade to 12.1.10 or later.

PAN-OS 11.2

11.2.0 through 11.2.13

Upgrade to 11.2.13-h2 or later.

PAN-OS 11.1

11.1.0 through 11.1.16

Upgrade to 11.1.16-h2 or later.

All older

unsupported

PAN-OS versions

Upgrade to a supported fixed version.

Prisma Access

No action needed.

Vendor-listed fixes

  • Cloud NGFW All

  • PAN-OS 12.2 All

  • PAN-OS 12.1 >= 12.1.10

  • PAN-OS 11.2 >= 11.2.13-h2

  • PAN-OS 11.1 >= 11.1.16-h2

  • Prisma Access All

CVEs in this advisory 1

Updates

  1. Published by Palo Alto Networks

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Confirmed at the source

    Our collector saw this advisory during a later source check.