CVE-2026-0256PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
Updated under an hour ago ()
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It affects Palo Alto Networks Cloud NGFW and 5 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.4 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- palo_alto
- NVD analysis
- Analyzed
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Palo Alto Networks Cloud NGFW palo_alto_networks:cloud_ngfw (from the name) | all versions not affected | CNA record |
Palo Alto Networks PAN-OS palo_alto_networks:pan-os | from 12.1.0 before 12.1.7; fixed at 12.1.7, fixed at 12.1.4-h5; from 11.2.0 before 11.2.12; fixed at 11.2.12, fixed at 11.2.10-h6, fixed at 11.2.7-h13, fixed at 11.2.4-h17; from 11.1.0 before 11.1.15; fixed at 11.1.15, fixed at 11.1.13-h5, fixed at 11.1.10-h25, fixed at 11.1.7-h6, fixed at 11.1.6-h32, fixed at 11.1.4-h33; from 10.2.0 before 10.2.18-h6; fixed at 10.2.18-h6, fixed at 10.2.16-h7, fixed at 10.2.13-h21, fixed at 10.2.10-h36, fixed at 10.2.7-h34 | CNA record |
Palo Alto Networks Prisma Access palo_alto_networks:prisma_access (from the name) | all versions not affected | CNA record |
Siemens RUGGEDCOM APE1808 siemens:ruggedcom_ape1808 (from the name) | all versions | CISA ADP |
paloaltonetworks pan-os paloaltonetworks:pan-os | before 10.2.7; from 10.2.8 before 10.2.10; from 10.2.11 before 10.2.13; from 10.2.14 before 10.2.16; 10.2.7; 10.2.7; 10.2.7; 10.2.7; and 163 more ranges | NVD |
siemens ruggedcom_ape1808_firmware siemens:ruggedcom_ape1808_firmware | all versions | NVD |
References
- https://security.paloaltonetworks.com/CVE-2026-0256vendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-967325.htmlthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.