Is CVE-2026-25524 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-25524 being exploited in the wild.

How severe is CVE-2026-25524?

High severity, with a CVSS score of 8.1, published 20 April 2026.

Which products and versions are affected?

openmage/magento-lts (Packagist) < 20.17.0, ECOSYSTEM:introduced=0,fixed=20.17.0.

Is there a fix for CVE-2026-25524?

Yes. openmage/magento-lts (Packagist): upgrade to 20.17.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Am I affected by CVE-2026-25524?

Check whether you run OpenMage Magento or openmage/magento-lts (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-25524: OpenMage LTS: Phar Deserialization leads to Remote Code Execution

Q: Is there a fix for CVE-2026-25524?

Yes. openmage/magento-lts (Packagist): upgrade to 20.17.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: Am I affected by CVE-2026-25524?

Check whether you run OpenMage Magento or openmage/magento-lts (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-25524 · Severity: high · CVSS 8.1 · Published 2026-04-20

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.

Technologies: OpenMage Magento, openmage/magento-lts (Packagist). Vendors: OpenMage, Packagist.

Quick answers

Is CVE-2026-25524 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-25524 being exploited in the wild.
How severe is CVE-2026-25524?: High severity, with a CVSS score of 8.1, published 20 April 2026.
Which products and versions are affected?: openmage/magento-lts (Packagist) < 20.17.0, ECOSYSTEM:introduced=0,fixed=20.17.0.
Is there a fix for CVE-2026-25524?: Yes. openmage/magento-lts (Packagist): upgrade to 20.17.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-25524?: Check whether you run OpenMage Magento or openmage/magento-lts (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

openmage/magento-lts (Packagist): upgrade to 20.17.0 or later
```
composer require openmage/magento-lts:^20.17.0
```

Affected products

OpenMage Magento
openmage/magento-lts (Packagist) < 20.17.0, ECOSYSTEM:introduced=0,fixed=20.17.0

Identifiers

CVE-2026-25524
GHSA-fg79-cr9c-7369

References

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