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CRITICAL severity

CVE-2020-9691 — community-edition

CRITICALFix: magento/magento2@9436781

CVE-2020-9691 is a critical-severity (CVSS 9.6) Cross-site Scripting (XSS) vulnerability in magento/community-edition. A fix is available for magento/community-edition — see the affected versions and patch details below.

Magento DOM-based Cross-site scripting vulnerability

Also known asBIT-magento-2020-9691GHSA-g7pc-799q-743f
Published
Updated
Affected
2 pkgs
Patched
1 / 2
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
6.0%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs93th percentile — riskier than 93% of all scored CVEsHighest risk
1.83%3.55%5.27%6.98%2.8%6.0%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

2 pkgs affected
🐘magento/community-edition🐘magento/project-community-edition

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Magento versions 2.3.5-p1 and earlier, and 2.3.5-p1 and earlier have a dom-based cross-site scripting vulnerability. Successful exploitation could lead to arbitrary code execution.

Affected Packages

2 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmagento/community-editionall versions2.3.5-p2composer require magento/community-edition:^2.3.5-p2
🐘Packagistmagento/project-community-editionall versionsNo fix

Affected Products

1 product · 6 configurations
Application
magentomagento
< 2.3.5
1 version
2.3.5

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for magento/community-edition, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update magento/community-edition to 2.3.5-p2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-9691 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Magento versions 2.3.5-p1 and earlier, and 2.3.5-p1 and earlier have a dom-based cross-site scripting vulnerability. Successful exploitation could lead to arbitrary code execution.
O3 Security · Impact-Aware SCA

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CVE-2020-9691: community-edition RCE — Fixed in 2.3.5-p2