{"id":"CVE-2026-0256","aliases":["EUVD-2026-30103","GHSA-q845-rv2h-x553"],"status":"published","title":"PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface","description":"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.\n\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma® Access are not impacted by this vulnerability.","severity":{"version":"4.0","score":4.4,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00164,"percentile":0.05726,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-05-13T18:18:05Z","modified":"2026-10-26T14:10:00Z","products":[{"vendor":"palo alto networks","product":"cloud ngfw"},{"vendor":"palo alto networks","product":"pan-os"},{"vendor":"palo alto networks","product":"prisma access"},{"vendor":"paloaltonetworks","product":"pan-os"},{"vendor":"siemens","product":"ruggedcom ape1808"},{"vendor":"siemens","product":"ruggedcom_ape1808_firmware"}],"references":[{"url":"https://security.paloaltonetworks.com/CVE-2026-0256","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-967325.html","tags":["Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0256"},{"url":"https://github.com/advisories/GHSA-q845-rv2h-x553"}],"sources":{"cve":[{"id":"CVE-2026-0256","title":"PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface","description":"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.\n\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma® Access are not impacted by this vulnerability.","status":"published","published":"2026-05-13T18:18:05.739Z","modified":"2026-10-15T01:11:24.782Z","cvss":[{"version":"4.0","score":4.4,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:20:13.587351Z"}],"euvd":[{"id":"EUVD-2026-30103","description":"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.\n\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma® Access are not impacted by this vulnerability.","status":"published","published":"2026-05-13T18:18:05Z","modified":"2026-10-15T01:11:24Z","cvss":[{"version":"4.0","score":4.4,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:27:06.951216Z"}],"ghsa":[{"id":"GHSA-q845-rv2h-x553","title":"A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables...","description":"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.\n\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma® Access are not impacted by this vulnerability.","status":"published","published":"2026-05-13T21:32:05Z","modified":"2026-07-14T18:32:50Z","cvss":[{"version":"4.0","score":4.4,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber","level":"medium"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:09:31.319926Z"}],"nvd":[{"id":"CVE-2026-0256","description":"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.\n\n\nThis issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).\n\nCloud NGFW and Prisma® Access are not impacted by this vulnerability.","status":"published","published":"2026-05-13T19:17:00.603Z","modified":"2026-10-26T14:10:00.13Z","cvss":[{"version":"4.0","score":4.4,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:U/V:D/RE:M/U:Amber","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:19.020465Z"}]}}