Is CVE-2026-42207 actively exploited?

No active exploitation of CVE-2026-42207 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42207 be exploited remotely?

Yes. CVE-2026-42207 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42207?

CVE-2026-42207 has a CVSS score of 6.1 (MEDIUM).

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MEDIUM

CVE-2026-42207

CWE-601Published: May 15, 2026· Updated: May 18, 2026

6.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:7.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-42207 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.