CVE-2026-0266

1.1 lowEPSS 0.1%

Low (1.1) in paloaltonetworks pan-os. EPSS 0.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

1.1 low

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

CVSS 3.1

4.8 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-06-10
Modified: 2026-07-23
Record from: the NVD, synced 2026-10-19

Affected

paloaltonetworks:pan-os

References

https://security.paloaltonetworks.com/CVE-2026-0266
https://cert-portal.siemens.com/productcert/html/ssa-104023.html

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