Medium severity6.1NVD Advisory· Published May 15, 2026· Updated May 18, 2026
CVE-2026-42207
CVE-2026-42207
Description
Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Prior to 20.18.0, Mage_ProductAlert_AddController::stockAction() reads the uenc query parameter and passes it directly to $this->_redirectUrl($backUrl) without calling $this->_isUrlInternal(). When the supplied product_id does not match any catalog product, the server issues an unvalidated HTTP 302 redirect to whatever URL was provided as uenc. This vulnerability is fixed in 20.18.0.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
openmage/magento-ltsPackagist | < 20.18.0 | 20.18.0 |
Affected products
1Patches
Vulnerability mechanics
References
3News mentions
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