CVE-2026-0256— PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
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I. Basic Information for CVE-2026-0256
Vulnerability Information
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Vulnerability Title
PAN-OS: Stored Cross-Site Scripting (XSS) Vulnerability in the Web Interface
Source: NVD (National Vulnerability Database)
Vulnerability 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. 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 impacted by this vulnerability.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
Palo Alto Networks PAN-OS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Palo Alto Networks PAN-OS是美国Palo Alto Networks公司的一套为其防火墙设备开发的操作系统。 Palo Alto Networks PAN-OS存在跨站脚本漏洞，该漏洞源于存储型跨站脚本问题，可能导致恶意认证管理员使用Web界面存储JavaScript有效载荷。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Palo Alto Networks | Cloud NGFW | - | - | |
| Palo Alto Networks | PAN-OS | 12.1.0 ~ 12.1.7 | cpe:2.3:o:palo_alto_networks:pan-os:12.1.6:*:*:*:*:*:*:* | |
| Palo Alto Networks | Prisma Access | - | - |
II. Public POCs for CVE-2026-0256
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Palo Alto Networks · 2026-05-13 · 26 CVEs total
| CVE-2026-0238 | Broker VM: Improper Input Validation in Broker VM Certificate and Key Fields | |
| CVE-2026-0242 | Trust Protection Foundation: SQL Injection Vulnerability | |
| CVE-2026-0258 | PAN-OS: Server-Side Request Forgery (SSRF) in IKEv2 Certificate URL Fetching | |
| CVE-2026-0245 | Prisma Access Agent: Information Disclosure Vulnerabilities | |
| CVE-2026-0259 | WildFire WF-500 and WF-500-B: Arbitrary File Read and Delete Vulnerability in WildFire App | |
| CVE-2026-0236 | Prisma Browser: Code Injection Enables Security Controls Bypass | |
| CVE-2026-0241 | Trust Protection Foundation: Multiple Authorization Bypass Vulnerabilities | |
| CVE-2026-0261 | PAN-OS: Authenticated Admin Command Injection Vulnerability | |
| CVE-2026-0265 | PAN-OS: Authentication Bypass with Cloud Authentication Service (CAS) enabled | |
| CVE-2026-0243 | Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through IPv6 Crafted Packet | |
| CVE-2026-0262 | PAN-OS: Denial of Service Vulnerabilities in Network Traffic Parsing | |
| CVE-2026-0237 | Prisma Browser: Improperly Restricted Automation Bridge Allows Security Bypass | |
| CVE-2026-0247 | Prisma Access Agent Endpoint DLP: Authorization Bypass Vulnerabilities | |
| CVE-2026-0250 | GlobalProtect App: Buffer Overflow Vulnerability during connection to Portal or Gateway | |
| CVE-2026-0264 | PAN-OS: Heap-Based Buffer Overflow in DNS Proxy and DNS Server Allows Unauthenticated Remo | |
| CVE-2026-0235 | Prisma Browser: Access and Data Rule Bypass | |
| CVE-2026-0251 | GlobalProtect App: Local Privilege Escalation Vulnerabilities | |
| CVE-2026-0249 | GlobalProtect App: Certificate Validation Bypass Vulnerabilities | |
| CVE-2026-0240 | Trust Protection Foundation: Sensitive Information Disclosure Vulnerability | |
| CVE-2026-0244 | Prisma SD-WAN: Improper Certificate Validation Vulnerability |
Showing top 20 of 26 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cloud NGFW
- CVE-2026-0257
PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities - CVE-2026-0258
PAN-OS: Server-Side Request Forgery (SSRF) in IKEv2 Certific - CVE-2026-0261
PAN-OS: Authenticated Admin Command Injection Vulnerability - CVE-2026-0262
PAN-OS: Denial of Service Vulnerabilities in Network Traffic - CVE-2026-0263
PAN-OS: Remote Code Execution (RCE) in IKEv2 Processing
Same vendor: Palo Alto Networks
- CVE-2026-0243
Prisma SD-WAN: Denial of Service (DoS) Vulnerability Through - CVE-2026-0248
Prisma Access Agent: Improper Certificate Validation Vulnera - CVE-2026-0242
Trust Protection Foundation: SQL Injection Vulnerability - CVE-2026-0244
Prisma SD-WAN: Improper Certificate Validation Vulnerability - CVE-2026-0241
Trust Protection Foundation: Multiple Authorization Bypass V
Same weakness: CWE-79
- CVE-2026-44549
Open WebUI: Stored XSS in excel file preview - CVE-2026-45299
Open WebUI: Stored Cross-Site Scripting In Profile Picture - CVE-2026-45665
Open WebUI: Stored XSS in Banner Component via Improper Sani - CVE-2026-45318
Open WebUI: Stored XSS via unsanitized Office/Excel/DOCX fil - CVE-2026-45315
Open WebUI: Stored XSS via attacker-controlled file extensio
V. Comments for CVE-2026-0256
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