CVE-2026-25524 (HIGH) CVSS 8.1
🟠Severity: HIGH (CVSS 8.1)
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.
Published: 2026-04-20
References:
- https://github.com/OpenMage/magento-lts/releases/tag/v20.17.0
- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-fg79-cr9c-7369