PT-2026-33796 · Openmage · Magento-Lts

Published 2026-04-20 · Updated 2026-04-20 · CVE-2026-25524

Mitre

CVSS v3.1

8.1

High

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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, PHP functions such as getimagesize(), file exists(), and is readable() can trigger deserialization when processing phar:// stream wrapper paths. OpenMage LTS uses these functions with potentially controllable file paths during image validation and media handling. An attacker who can upload a malicious phar file (disguised as an image) and trigger one of these functions with a phar:// path can achieve arbitrary code execution. Version 20.17.0 patches the issue.

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2026-25524

Affected Products

Magento-Lts

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-25524 · Security Note
• https://github.com/OpenMage/magento-lts/releases/tag/v20.17.0 · Note
• https://github.com/OpenMage/magento-lts/security/advisories/GHSA-fg79-cr9c-7369 · Note