CVE-2021-28556: Magento DOM-based Cross-Site Scripting vulnerability on mage-messages cookies

May 24, 2022 (updated February 10, 2025)

Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by a DOM-based Cross-Site Scripting vulnerability on mage-messages cookies. Successful exploitation could lead to arbitrary JavaScript execution by an unauthenticated attacker. User interaction is required for successful exploitation.

References

github.com/advisories/GHSA-39ch-rg26-gmq5
github.com/magento/magento2
github.com/magento/magento2/commit/1bd5cb8c065e44779526c0b044ce19b884707695
helpx.adobe.com/security/products/magento/apsb21-30.html
nvd.nist.gov/vuln/detail/CVE-2021-28556

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