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CVE-2026-0308— PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface

Quick assessment

Affected
Palo Alto Networks Cloud NGFW
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Palo Alto Networks PAN-OS® 软件中存在一个存储型跨站脚本（XSS）漏洞，允许恶意认证的管理员通过 Web 界面存储或执行 JavaScript 载荷。 此问题适用于 PA 系列和 VM 系列防火墙以及 Panorama（虚拟版和 M 系列）上的 PAN-OS 软件。 云下一代防火墙（Cloud NGFW）和 Prisma® Access 不受此漏洞影响。

CVSS 0.4 · Low

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-0308

Vulnerability Information
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Vulnerability Title
PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
Source: CVE Program / CVE List V5
Vulnerability Description
A stored cross-site scripting (XSS) vulnerability in Palo Alto Networks PAN-OS® software enables a malicious authenticated administrator to store or execute 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 affected by this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/AU:N/R:U/V:D/RE:M/U:Amber
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Palo Alto Networks Cloud NGFW - -
Palo Alto Networks PAN-OS 12.1.0 ~ 12.1.10 cpe:2.3:o:palo_alto_networks:pan-os:12.1.9:*:*:*:*:*:*:*
Palo Alto Networks Prisma Access All ~ 12.1.4-h10 -

II. Public POCs for CVE-2026-0308

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III. Intelligence Information for CVE-2026-0308

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Vendor Advisories for CVE-2026-0308 (1)

Same Patch Batch · Palo Alto Networks · 2026-09-10 · 9 CVEs total

CVE-2026-0307 5.9 MEDIUM GlobalProtect App: Local Privilege Escalation Vulnerabilities
CVE-2026-0306 5.8 MEDIUM Prisma Access Agent: EndPoint DLP Bypass Vulnerability on Windows
CVE-2026-0310 5.2 MEDIUM PAN-OS: Buffer Overflow Vulnerability via XML Processing
CVE-2026-0304 4.8 MEDIUM Cortex XDR Broker VM: Privilege Escalation Vulnerability
CVE-2026-0305 4.3 MEDIUM Prisma Access Agent: Information Disclosure Vulnerability on Linux
CVE-2026-0309 4.0 MEDIUM PAN-OS: Authenticated Command Injection in CLI with Luna HSM Configuration
CVE-2026-0303 2.4 LOW Checkov by Prisma Cloud: Code Execution via Auto-Loaded Configuration File
CVE-2026-0302 1.1 LOW Checkov by Prisma Cloud: OS Command Injection Vulnerability

IV. Related Vulnerabilities

Same product: Cloud NGFW
Same vendor: Palo Alto Networks
Same weakness: CWE-79

V. Comments for CVE-2026-0308

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