External risk intelligence

Adobe Experience Manager Arbitrary Code Execution via Improper Input Validation.

CVE advisorySeverity: CRITICAL (CVSS 9.1)

CVE-2026-106626

Adobe Experience Manager is a web content management system typically deployed as a public-facing web application or edge service to serve content to internet users. While the vulnerability requires high privileges, the product itself is commonly exposed to the internet to perform its primary function as a web platform.

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

Adobe Experience Manager faces a critical vulnerability due to improper input validation, which could allow a high-privilege attacker to execute arbitrary code. This issue impacts systems that handle web content and could potentially lead to unauthorized code execution without requiring user interaction, affecting the system's scope.

Input validation flaw allows code execution.
Critical risk in web content management.
Confirm relevance and exposure of systems.

Attack Path

How an attacker could exploit the issue

An attacker with high privileges could exploit this vulnerability by sending specially crafted input to Adobe Experience Manager, leading to arbitrary code execution within the context of the current user. The attack does not require any interaction from the user.

Entry condition: Attacker needs high privileges.
Trigger point: Input validation flaw.
Resulting risk: Arbitrary code execution.

Live Threat

Current exploitation, exposure, and threat context

This Improper Input Validation vulnerability in Adobe Experience Manager could allow an authenticated attacker with high privileges to execute arbitrary code. This could affect the system's integrity and confidentiality when code execution is supported.

System data could be compromised.
Arbitrary code execution may occur.
Unauthorized actions could be taken.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Adobe Experience Manager requires immediate attention from teams managing sensitive applications and their associated infrastructure. The first critical step is to identify all instances of Adobe Experience Manager within your environment, assess their exposure, and confirm the business criticality of each. Once identified, engage the accountable system or application owner to determine the appropriate remediation strategy.

Own by application and infrastructure teams.
Verify instance exposure and criticality first.
Plan vendor-coordinated remediation.

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 Experience Manager?

Adobe Experience Manager is a comprehensive web content management system used by organizations to build, manage, and deliver digital experiences across websites, mobile apps, and forms. It serves as a central platform for content publishing and digital asset management, often acting as a public-facing web server that interacts with both content creators and internet users.

How does this improper input validation flaw lead to code execution?

The vulnerability stems from CWE-20, where the system fails to properly verify or sanitize data sent by a user. Because the application processes this untrusted input incorrectly, an attacker can supply specially crafted data that the system mistakenly interprets as valid commands, resulting in arbitrary code execution within the environment of the current user.

Does this CVE require user interaction to trigger?

No, this vulnerability does not require any interaction from a user to be triggered. However, an attacker must already possess high-level privileges within the system to initiate the exploit. Normal, unprivileged users or anonymous visitors cannot trigger this specific flaw.

Is my Adobe Experience Manager instance at risk?

Halo Surface Signal indicates that because this software is frequently deployed as a public-facing web application to serve content, it is often exposed to the internet. If your instance is accessible via the network and handles external web traffic, it falls into the category of systems that should be prioritized for review regarding this vulnerability.

How should I respond to CVE-2026-106626?

Start by identifying every instance of Adobe Experience Manager deployed in your infrastructure to determine which are active and their relative business importance. Once you have a complete inventory, verify the exposure level of each server. Finally, coordinate with your application owners to plan and apply the necessary vendor-provided updates to mitigate the risk.

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.