Vulnerability · Published May 15, 2026 · Assigned by GitHub_M

CVE-2026-42458Magento LTS: Reflected XSS - Import -> Data Flow (profiles)

Medium 5.3

In plain English

A medium-severity security flaw in magento-lts from OpenMage. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.3%top 74.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	openmage/magento-lts	20.18.0	GHSA-x8jv-q8j2-487c

Affected products (as reported)

Vendor	Product	Versions
OpenMage	magento-lts	< 20.18.0

Weakness: CWE-87 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

References

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