Medium6.9Palo Alto Networks Updated
CVE-2026-0256 PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
CVE-2026-0256 Published May 28, 2026
CVE-2026-0256
Affected products & platforms
Palo Alto NetworksPAN-OSFirewall
Summary
CVE-2026-0256 PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
Affected versions
- PAN-OS < 12.1.7
- PAN-OS < 11.2.12
- PAN-OS < 11.1.15
- PAN-OS < 10.2.18-h6
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- PAN-OS >= 12.1.7
- PAN-OS >= 12.1.4-h5
- PAN-OS >= 11.2.12
- PAN-OS >= 11.2.10-h6
- PAN-OS >= 11.2.7-h13
- PAN-OS >= 11.2.4-h17
- PAN-OS >= 11.1.15
- PAN-OS >= 11.1.13-h5
- PAN-OS >= 11.1.10-h25
- PAN-OS >= 11.1.7-h6
- PAN-OS >= 11.1.6-h32
- PAN-OS >= 11.1.4-h33
- PAN-OS >= 10.2.18-h6
- PAN-OS >= 10.2.16-h7
- PAN-OS >= 10.2.13-h21
- PAN-OS >= 10.2.10-h36
- PAN-OS >= 10.2.7-h34
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Upgrade to a fixed release: PAN-OS >= 12.1.7; PAN-OS >= 12.1.4-h5; PAN-OS >= 11.2.12; PAN-OS >= 11.2.10-h6; ….
Temporary workarounds
- Customers with a Threat Prevention subscription can block attacks for this vulnerability by enabling Threat ID 510020 (from Applications and Threats content version 9100-10044 and later).
- For these Threat IDs to protect against attacks for this vulnerability:
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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