CVE intelligence and bounded remediation

CVE-2020-2017 — A DOM-Based Cross Site Scripting Vulnerability exists in PAN-OS and Panorama Management Web Interfaces

High CVSS 8.8

A DOM-Based Cross Site Scripting Vulnerability exists in PAN-OS and Panorama Management Web Interfaces. A remote attacker able to convince an authenticated administrator to click on a crafted link to PAN-OS and Panorama Web Interfaces could execute arbitrary JavaScript code in the administrator's browser and perform administrative actions. This issue affects: PAN-OS 7.1 versions earlier than 7.1.26; PAN-OS 8.1 versions earlier than 8.1.13; PAN-OS 9.0 versions earlier than 9.0.6; All versions of PAN-OS 8.0.

Severity
High
CVSS
8.8 (3.1)
Published
2020-05-13
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-79

Affected products

  • paloaltonetworks / pan-os

Showing 1 representative product identities from 4 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Cross-site scripting and unsafe browser output

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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