Medium severityNVD Advisory· Published May 13, 2026· Updated Jun 9, 2026

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Paloaltonetworks/PAN-OS Panoramallm-fuzzy
Paloaltonetworks/Pan OSllm-fuzzy

Patches

Vulnerability mechanics

References

cert-portal.siemens.com/productcert/html/ssa-967325.htmlnvd
security.paloaltonetworks.com/CVE-2026-0256nvd

News mentions

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cvss	0.260
epss	0.000
exploit	0.000
kev	0.000
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ransomware	0.000