XSS in Palo Alto Networks Cloud Ngfw
CVE-2026-0256
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 o…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.002 (7.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
Affected products
- Palo Alto Networks Cloud Ngfw — versions All
- Palo Alto Networks Pan-os — versions 12.1.0, 11.2.0, 11.1.0
- Palo Alto Networks Prisma Access — versions All
- Paloaltonetworks Pan-os — versions 10.2.7, 10.2.10, 10.2.13
- Siemens Ruggedcom_ape1808
- Siemens Ruggedcom_ape1808_firmware
Weakness classification (CWE)
References
- psirt@paloaltonetworks.com (vendor-advisory, Vendor Advisory)
- 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-0256?
- CVE-2026-0256 is a medium-severity vulnerability in Palo Alto Networks Cloud Ngfw, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-05-13.
- How severe is CVE-2026-0256?
- Medium severity. CVSS v3 base score is 4.8 out of 10.