CVE-2021-3043: Palo Alto Networks Prisma Cloud

Medium severity, CVSS 4.8. EPSS: 0.6% chance of exploitation in the next 30 days.

A reflected cross-site scripting (XSS) vulnerability exists in the Prisma Cloud Compute web console that enables a remote attacker to execute arbitrary JavaScript code in the browser-based web console while an authenticated administrator is using that web interface. Prisma Cloud Compute SaaS versions were automatically upgraded to the fixed release. No additional action is required for these instances. This issue impacts: Prisma Cloud Compute 20.12 versions earlier than Prisma Cloud Compute 20.12.552; Prisma Cloud Compute 21.04 versions earlier than Prisma Cloud Compute 21.04.439.

Affected products

• Palo Alto Networks Prisma Cloud: from 20.12, before 20.12.552 (fixed in 20.12.552); from 21.04, before 21.04.439 (fixed in 21.04.439)

Published 2021-07-15. Last modified 2026-06-17.