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

CVSS 6.1 · Medium EPSS 0.03% · P8

Affected Version Matrix 1

VendorProductVersion RangeStatus
OpenMagemagento-lts< 20.18.0affected
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I. Basic Information for CVE-2026-42207

Vulnerability Information
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Vulnerability Title
Magento LTS: Open Redirect via Unvalidated `uenc` Parameter in `stockAction()` - magento-lts
Source: NVD (National Vulnerability Database)
Vulnerability 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 $this->_isUrlInternal(). When the supplied product_id does not match any catalog product, the server issues an unvalidated HTTP 302 redirect to whatever URL was provided as uenc. This vulnerability is fixed in 20.18.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
magento-lts 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
magento-lts是OpenMage开源的一个用于Magento CE官方版本的可靠替代品。 magento-lts 20.18.0之前版本存在输入验证错误漏洞，该漏洞源于Mage_ProductAlert_AddController::stockAction()读取uenc查询参数并直接传递给$this->_redirectUrl($backUrl)而未调用$this->_isUrlInternal()，当提供的product_id不匹配任何目录产品时，服务器发出未经验证的HTTP 302重定向到u
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
OpenMagemagento-lts < 20.18.0 -

II. Public POCs for CVE-2026-42207

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III. Intelligence Information for CVE-2026-42207

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Same Patch Batch · OpenMage · 2026-05-15 · 3 CVEs total

CVE-2026-42155Magento LTS: Weak API Session ID — Predictable MD5 of Time-Derived Inputs
CVE-2026-42458Magento LTS: Reflected XSS - Import -> Data Flow (profiles)

IV. Related Vulnerabilities

Same product: magento-lts
Same vendor: OpenMage
Same weakness: CWE-601

V. Comments for CVE-2026-42207

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