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CVE-2026-42207

CVE-2026-42207 · Magento LTS: Open Redirect via Unvalidated `uenc` Parameter in `stockAction()` - magento-lts

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.1 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • magento-lts

    Versions
    • < 20.18.0: Affected

    No fix published

  • openmage/magento-lts Packagist

    Versions
    • 1.9.1.1
    • 1.9.2.0
    • 1.9.2.1
    • 1.9.2.2
    • 1.9.2.3
    • 1.9.2.4
    • 1.9.3.0
    • 1.9.3.1
    • v19.4.0
    • v19.4.1
    • v19.4.10
    • v19.4.11
    • v19.4.12
    • v19.4.13
    • v19.4.14
    • v19.4.15
    • v19.4.16
    • v19.4.17
    • v19.4.18
    • v19.4.19
    • v19.4.2
    • v19.4.20
    • v19.4.21
    • v19.4.22
    • v19.4.23
    • v19.4.3
    • v19.4.4
    • v19.4.5
    • v19.4.6
    • v19.4.7
    • v19.4.8
    • v19.4.9
    • v19.5.0
    • v19.5.0-rc1
    • v19.5.0-rc2
    • v19.5.0-rc3
    • v19.5.0-rc4
    • v19.5.0-rc5
    • v19.5.1
    • v19.5.2
    • v19.5.3
    • v20.0.0
    • v20.0.1
    • v20.0.10
    • v20.0.11
    • v20.0.12
    • v20.0.13
    • v20.0.14
    • v20.0.15
    • v20.0.16
    • v20.0.17
    • v20.0.18
    • v20.0.19
    • v20.0.2
    • v20.0.20
    • v20.0.3
    • v20.0.4
    • v20.0.5
    • v20.0.6
    • v20.0.7
    • v20.0.8
    • v20.1.0
    • v20.1.0-rc1
    • v20.1.0-rc2
    • v20.1.0-rc3
    • v20.1.0-rc4
    • v20.1.0-rc5
    • v20.1.0-rc6
    • v20.1.0-rc7
    • v20.1.1
    • v20.10.0
    • v20.10.1
    • v20.10.2
    • v20.11.0
    • v20.12.0
    • v20.12.1
    • v20.12.2
    • v20.12.3
    • v20.13.0
    • v20.14.0
    • v20.15.0
    • v20.16.0
    • v20.17.0
    • v20.2.0
    • v20.3.0
    • v20.4.0
    • v20.5.0
    • v20.6.0
    • v20.7.0
    • v20.8.0
    • v20.9.0
    Affected ranges
    • ECOSYSTEM: < 20.18.0

    Update to 20.18.0

Original sources

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