CVE-2026-128028

Description

OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a stored cross-site scripting vulnerability in Mage_Catalog_Model_Product_Option_Type_File, which accepts guest SVG, XHTML, or XML uploads through product File custom options with an empty allowed-extension list. Unauthenticated attackers can send the file URL under media/custom_options/ to victims, executing script in the store origin and exposing administrator sessions when the admin panel shares that origin.

References

• https://github.com/OpenMage/magento-lts/commit/5896b2a60b10e892cec594391b2612ab53a4ce59
• https://github.com/OpenMage/magento-lts/commit/5b6f985785245a964aa3dc78609f6af44d9d5e27
• https://github.com/OpenMage/magento-lts/commit/dd692b825ba50f196bcc20ae67fbed48dd95da56
• https://github.com/OpenMage/magento-lts/security/advisories/GHSA-v7mx-rv47-452m
• https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-stored-xss-via-product-custom-option-svg-upload