External risk intelligence

Adobe Commerce Improper Encoding Code Execution Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 10.0)

CVE-2026-48358

Adobe Commerce (formerly Magento) is a platform typically deployed as a public-facing e-commerce web application, making it commonly reachable from the internet in standard business deployments.

Adobe Commerce

2.4.42.4.52.4.6

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory concerns a critical vulnerability in Adobe Commerce, previously known as Magento. The issue involves improper handling of output data, which could allow attackers to execute arbitrary code on the affected system without requiring user interaction, potentially impacting the integrity and availability of e-commerce operations. The main concern at this stage is confirming relevance and exposure within our environment.

Improper data handling allows code execution.
Affects e-commerce platform; assess exposure.
Confirm relevance and potential impact.

Attack Path

How an attacker could exploit the issue

An attacker with administrative privileges could exploit this vulnerability by sending specially crafted data to a vulnerable component in Adobe Commerce. This could lead to arbitrary code execution within the context of the current user, potentially allowing the attacker to compromise the application and its data.

Requires administrative access.
Triggered by sending crafted data.
Leads to arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

This Improper Encoding or Escaping of Output vulnerability in Adobe Commerce could allow an authenticated attacker to execute arbitrary code. This could occur when supported by the advisory's conditions and affect the current user's context within the application.

Authenticated user session data.
Malicious input is improperly handled.
Arbitrary code execution on the server.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability impacts Adobe Commerce, a platform frequently deployed as a public-facing e-commerce application. Ownership will likely fall to application or platform teams responsible for the Adobe Commerce deployment, with support from infrastructure and security teams. The immediate first step is to confirm the presence of Adobe Commerce, assess its internet reachability and business criticality, and identify the accountable owner to plan a risk-based remediation.

Application owners should manage the issue.
Verify internet reachability and criticality.
Plan remediation based on confirmed risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Adobe Commerce?

Adobe Commerce, formerly known as Magento, is a widely used e-commerce platform that businesses utilize to build and manage online stores. It acts as the core engine for processing customer transactions, managing product catalogs, and handling site-wide web content. Because it sits at the intersection of public user traffic and sensitive backend business data, it is a critical component of many organizations' digital infrastructure.

What does CVE-2026-48358 mean by improper encoding?

This vulnerability, classified as CWE-116, occurs when the software fails to correctly process or neutralize special characters in data before sending it to an output. Because the system does not properly encode or escape this output, an attacker can supply crafted data that the application then inadvertently executes as code. This allows for unauthorized commands to run within the system, effectively bypassing security controls designed to handle inputs safely.

How is this Adobe Commerce vulnerability triggered?

An attacker triggers this flaw by sending specially crafted data to a vulnerable component within the platform. This vulnerability specifically requires the attacker to already possess administrative privileges to initiate the exploit. It is not triggered by standard site visitors or unauthenticated users, as the process relies on the capabilities granted to an existing administrative account.

Why does Halo Surface Signal categorize this as external?

Halo Surface Signal identifies this as an external threat because Adobe Commerce is almost always deployed as a public-facing web application. Since the platform is designed to be reachable from the internet to facilitate shopping and checkout processes, any vulnerability in its core functionality is considered exposed to external networks rather than confined to an internal, isolated environment.

What should I do if I run Adobe Commerce?

Your first step is to confirm where Adobe Commerce is installed in your network and determine if it is internet-facing. Identify the specific teams responsible for managing the platform's updates and operations. Once the accountable owners are identified, evaluate the system's business criticality and prepare a remediation plan to apply the official security updates provided by the vendor.

References

helpx.adobe.com/security/products/magento/apsb26-73.html

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.