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MEDIUM severity

CVE-2021-36026 — project-community-edition

MEDIUM

CVE-2021-36026 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in magento/project-community-edition. A fix is available for magento/project-community-edition — see the affected versions and patch details below.

Magento stored cross-site scripting vulnerability in the customer address upload feature

Also known asGHSA-8gfq-m4cf-w975
Published
Updated
Affected
5 pkgs
Patched
2 / 5
Exploits
None indexed
Exploitation data as of Oct 26, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs77th percentile — riskier than 77% of all scored CVEsHighest risk
1.03%1.42%1.81%2.20%1.5%1.7%Apr 26Aug 26Oct 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

5 pkgs affected
🐘magento/project-community-edition🐘magento/community-edition🐘magento/community-edition🐘magento/community-edition🐘magento/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 Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by a stored cross-site scripting vulnerability in the customer address upload feature that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.

Affected Packages

5 total 2 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistmagento/project-community-editionall versionsNo fix
🐘Packagistmagento/community-editionall versions2.3.7-p1composer require magento/community-edition:^2.3.7-p1
🐘Packagistmagento/community-editionall versionsNo fix
🐘Packagistmagento/community-edition≥ 2.4.2-p1&&< 2.4.2-p22.4.2-p2composer require magento/community-edition:^2.4.2-p2
🐘Packagistmagento/community-editionall versionsNo fix

Affected Products

2 products · 6 configurations
Application
adobe commerceadobe
≥ 2.4.0 && ≤ 2.4.2
1 version
2.4.2
Application
magento open sourceadobe
≥ 2.4.0 && ≤ 2.4.2
1 version
2.4.2

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/project-community-edition, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    A fix is available for CVE-2021-36026; check the affected-versions list above or the advisory for the patched release of magento/project-community-edition, then make sure no transitive dependency still pins the vulnerable range.

  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 Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by a stored cross-site scripting vulnerability in the customer address upload feature that could be abused by an attacker to inject malicious scripts into vulnerable form fields. Malicious JavaScript may be executed in a victim’s browser when they browse to the page containing the vulnerable field.
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CVE-2021-36026: project-community — Fixed in 2.3.7-p1