CVE-2026-0266

EUVD-2026-36134
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.8 MEDIUM
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
Affected Products (NVD)
VendorProductVersion
paloaltonetworkspan-os
10.2.0 ≤
𝑥
< 11.1.14
paloaltonetworkspan-os
11.2.0 ≤
𝑥
< 11.2.11
paloaltonetworkspan-os
12.1.0 ≤
𝑥
< 12.1.5
𝑥
= Vulnerable software versions
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
SiemensRUGGEDCOM APE1808
𝑥
< *
ADP
Common Weakness Enumeration
References
https://security.paloaltonetworks.com/CVE-2026-0266
https://cert-portal.siemens.com/productcert/html/ssa-104023.html