CVE-2026-42458

Magento LTS: Reflected XSS - Import -> Data Flow (profiles)

MEDIUM

5.3

CVSS Score

Published: May 15, 2026 at 05:02 PM UTC

Updated: October 26, 2026 at 02:10 PM UTC

1 product affected across 1 vendorMagento

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Severity

MEDIUM5.3

Exploit prediction

EPSS 0.3%

SSVC

PoC

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, there is a reflected XSS vulnerability under admin panel -> System -> Import/Export -> Dataflow - Profiles. This vulnerability is fixed in 20.18.0.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Magento · Openmagecomposer

90%

v < 20.18.0

Affected range stops below 20.18.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_CONFIRM

Source: cverecord

https://github.com/OpenMage/magento-lts/security/advisories/GHSA-x8jv-q8j2-487c

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMGitHub_M

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-87

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