Prisma Cloud: Cross-Site Scripting (XSS) Vulnerability in Prisma Cloud Compute Web Console

published 2021-07-15 5y ago modified 2026-06-17 4mo ago also EUVD-2021-26395

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

Palo Alto Networks Prisma Cloud Compute 20.12.552, 21.04.439

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Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD	3.1	4.8	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Affected products

Palo Alto Networks Prisma Cloud Compute

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

security.paloaltonetworks.com /CVE-2021-3043
vendor-advisory

Sources

CVE List CVE-2021-3043
NVD CVE-2021-3043

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