CVE-2026-0266

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

CVSS 1.1 LOWEPSS 0.2%CWE-79

Vexday Risk Score

8Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 1.1EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

10 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A 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 affected by this vulnerability.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber

Affected products

Palo Alto Networks · Cloud NGFW Palo Alto Networks · PAN-OS Palo Alto Networks · Prisma Access

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References

https://security.paloaltonetworks.com/CVE-2026-0266