Vulnerability · Published Apr 20, 2026 · Assigned by GitHub_M

CVE-2026-25525OpenMage LTS has Path Traversal Filter Bypass in Dataflow Module

Medium 4.9

In plain English

A medium-severity path traversal 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 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.9Medium

Exploit odds (30 days)0.5%top 56.9% 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 version 20.17.0, the Dataflow module in OpenMage LTS uses a weak blacklist filter (`str_replace('../', '', $input)`) to prevent path traversal attacks. This filter can be bypassed using patterns like `..././` or `....//`, which after the replacement still result in `../`. An authenticated administrator can exploit this to read arbitrary files from the server filesystem. Version 20.17.0 patches the issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	openmage/magento-lts	20.17.0	GHSA-6vqf-6fhm-7rc6

Affected products (as reported)

Vendor	Product	Versions
OpenMage	magento-lts	< 20.17.0

Weakness: CWE-22, CWE-184 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/OpenMage/magento-lts/security/advisories/GHSA-6vqf-6fhm-7rc6 x_refsource_CONFIRM