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    <lastBuildDate>Fri, 02 Oct 2026 15:31:53 +0000</lastBuildDate>
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      <title>CVE-2026-0279 — PAN-OS: Multiple Cross-Site Scripting (XSS) Vulnerabilities</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-0279</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Palo Alto Networks Cloud NGFW, Palo Alto Networks PAN-OS, Palo Alto Networks Prisma Access, Siemens RUGGEDCOM APE1808&lt;/p&gt;
&lt;p&gt;Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript payload.&lt;/p&gt;
&lt;p&gt;The security risk posed by this issue is minimized when the management interface and access to the User-ID™ Authentication Portal is restricted to only trusted internal IP addresses according to our recommended  best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .&lt;/p&gt;
&lt;p&gt;This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).&lt;/p&gt;
&lt;p&gt;Cloud NGFW is not affected by this vulnerability.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Palo Alto Networks Cloud NGFW, Palo Alto Networks PAN-OS, Palo Alto Networks Prisma Access, Siemens RUGGEDCOM APE1808&lt;/p&gt;
&lt;p&gt;Multiple cross site scripting vulnerabilities in the User-ID™ Authentication Portal (aka Captive Portal) service, GlobalProtect™ gateway/portal features and Clientless VPN of Palo Alto Networks PAN-OS® software enables a malicious unauthenticated user to store or execute malicious JavaScript payload.&lt;/p&gt;
&lt;p&gt;The security risk posed by this issue is minimized when the management interface and access to the User-ID™ Authentication Portal is restricted to only trusted internal IP addresses according to our recommended  best practice deployment guidelines https://live.paloaltonetworks.com/t5/community-blogs/tips-amp-tricks-how-to-secure-the-management-access-of-your-palo/ba-p/464431 .&lt;/p&gt;
&lt;p&gt;This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series).&lt;/p&gt;
&lt;p&gt;Cloud NGFW is not affected by this vulnerability.&lt;/p&gt;</content:encoded>
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