CVE-2026-0279Network attack vector

JavaScript execution through portal cross-site scripting

Published Jul 9, 2026 · Updated Jul 9, 2026

Cross-site scripting in PAN-OS and Prisma Access portals allows attackers to store or execute JavaScript through crafted input. Palo Alto Networks identifies the User-ID Authentication Portal, GlobalProtect gateway and portal, and Clientless VPN, but has not disclosed the affected inputs or page-generation operations. PAN-OS exploitation is unauthenticated and requires passive user interaction; Prisma Access requires an authenticated user, and external management access is restricted.

CVSS severity6.1
Medium
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in PAN-OS and Prisma Access portals allows attackers to store or execute JavaScript through crafted input. Palo Alto Networks identifies the User-ID Authentication Portal, GlobalProtect gateway and portal, and Clientless VPN, but has not disclosed the affected inputs or page-generation operations. PAN-OS exploitation is unauthenticated and requires passive user interaction; Prisma Access requires an authenticated user, and external management access is restricted.

The record

CVE
CVE-2026-0279
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Palo Alto Networks
Product
PAN-OS
Classifications
CWE-79, CAPEC-63, T1059.007
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.2.0 <10.2.18-h8 changes=[{"at":"10.2.18-h8","status":"unaffected"},{"at":"10.2.16-h9","status":"unaffected"},{"at":"10.2.13-h23","status":"unaffected"},{"at":"10.2.10-h39","status":"unaffected"},{"at":"10.2.7-h36","status":"unaffected"}]
  2. Affected versionversion=11.1.0 <11.1.16 changes=[{"at":"11.1.16","status":"unaffected"}]
  3. Affected versionversion=11.2.0 <11.2.13 changes=[{"at":"11.2.13","status":"unaffected"}]
  4. Affected versionversion=12.1.0 <12.1.8 changes=[{"at":"12.1.8","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Palo Alto Networks · PAN-OSversion=10.2.0 <10.2.18-h8 changes=[{"at":"10.2.18-h8","status":"unaffected"},{"at":"10.2.16-h9","status":"unaffected"},{"at":"10.2.13-h23","status":"unaffected"},{"at":"10.2.10-h39","status":"unaffected"},{"at":"10.2.7-h36","status":"unaffected"}]; version=11.1.0 <11.1.16 changes=[{"at":"11.1.16","status":"unaffected"}]; version=11.2.0 <11.2.13 changes=[{"at":"11.2.13","status":"unaffected"}]; version=12.1.0 <12.1.8 changes=[{"at":"12.1.8","status":"unaffected"}]
Palo Alto Networks · Prisma Accessversion=10.2.0; version=11.2.0; version=12.1.0 <12.1.8 changes=[{"at":"12.1.8","status":"unaffected"}]

Published CVSS scores

2.4Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
5.1Palo Alto NetworksCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.3Palo Alto NetworksCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-63Cross-Site Scripting (XSS)
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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