CVE-2026-0279
PAN-OS: Multiple Cross-Site Scripting (XSS) Vulnerabilities
No known exploitation. EPSS puts it in the 54th percentile. Fixed versions are out.
What to do
Find your product and version, then upgrade to the build on the right.
- Palo Alto Networks Cloud NGFWFixed buildsAllStated by: CVE record
- Palo Alto Networks PAN-OSAffected: ≥ 12.1.0, < 12.1.8Upgrade to: 12.1.8Affected: ≥ 11.2.0, < 11.2.13Upgrade to: 11.2.13Affected: ≥ 11.1.0, < 11.1.16Upgrade to: 11.1.16Affected: ≥ 10.2.0, < 10.2.18-h8Upgrade to: 10.2.18-h8Stated by: CVE record
- Palo Alto Networks Prisma AccessAffected: ≥ 12.1.0, < 12.1.8Upgrade to: 12.1.8Affected: 11.2.0Upgrade to: not statedAffected: 10.2.0Upgrade to: not statedStated by: CVE record
- Paloaltonetworks Pan-osAffected: ≥ 10.2.0, < 11.1.16Upgrade to: 11.1.16Stated by: NVD
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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. 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 . This issue is applicable to PAN-OS software on PA-Series and VM-Series firewalls and on Panorama (virtual and M-Series). Cloud NGFW is not affected by this vulnerability.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.8% chance of exploitation activity in the next 30 days, which ranks it in the 54th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
13 events over 33 days, from the signal feeds we watch.
- Patch availableworkaround available, record updated
- OpenVAS check added
- Patch availableworkaround available, record updated
- Patch availableworkaround available, published, weakness classified, att&ck mapped, record updated
Affected products
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Scored 6.1 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required NoneNo authentication required — anyone can exploit this
- User Interaction RequiredA user must click a link, open a file, or perform some action
Scope
- Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
Impact if exploited
- Confidentiality LowSome restricted information is disclosed, but limited in scope
- Integrity LowData modification is possible but limited in scope or consequence
- Availability NoneNo availability impact
Weaknesses
ATT&CK techniques
Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.
Sources
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