What is CVE-2021-37710?

CVE-2021-37710 is a high-severity vulnerability in Shopware Platform, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2021-08-16.

How severe is CVE-2021-37710?

High severity. CVSS v3 base score is 8.0 out of 10.

XSS in Shopware Platform

CVE-2021-37710

Shopware is an open source eCommerce platform. Versions prior to 6.4.3.1 contain a Cross-Site Scripting vulnerability via SVG media files. Version 6.4.3.1 contains a patch. As workarounds for older versions of 6.1, 6.2, and 6.3, corresponding security measures are also available via a plugin.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-08-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (53.9th percentile), scored 2026-10-23.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Shopware Platform — versions <= 6.4.3.0
Shopware

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/shopware/platform/security/advisories/GHSA-fc38-mxwr-pfhx (Third Party Advisory)
github.com/shopware/platform/commit/abe9f69e1f667800f974acccd3047b4930e4b423 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-37710?: CVE-2021-37710 is a high-severity vulnerability in Shopware Platform, classified under Cross-site Scripting. CVSS score: 8.0/10. Published 2021-08-16.
How severe is CVE-2021-37710?: High severity. CVSS v3 base score is 8.0 out of 10.