OpenMage magento-lts up to 20.16.x phar getimagesize/file_exists/is_readable deserialization

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k4.08

Summaryinfo

A vulnerability, which was classified as problematic, has been found in OpenMage magento-lts up to 20.16.x. This vulnerability affects the function getimagesize/file_exists/is_readable of the component phar Handler. Performing a manipulation results in deserialization. This vulnerability is reported as CVE-2026-25524. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in OpenMage magento-lts up to 20.16.x. This affects the function getimagesize/file_exists/is_readable of the component phar Handler. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-25524 since 02/02/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

Upgrading to version 20.17.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

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Productinfo

Type

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.1
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: magento-lts 20.17.0

Timelineinfo

02/02/2026 CVE reserved
04/20/2026 +76 days Advisory disclosed
04/20/2026 +0 days VulDB entry created
04/20/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-fg79-cr9c-7369
Status: Confirmed

CVE: CVE-2026-25524 (🔒)
GCVE (CVE): GCVE-0-2026-25524
GCVE (VulDB): GCVE-100-358317

Entryinfo

Created: 04/20/2026 19:48
Changes: 04/20/2026 19:48 (67)
Complete: 🔍
Cache ID: 216::103

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