CVE-2026-77111 in Commerce
Summary
by MITRE • 09/09/2026
Adobe Commerce is affected by an Incorrect Authorization vulnerability that could result in a Security feature bypass. An attacker with high privileges could leverage this vulnerability to bypass security measures and gain unauthorized write access, causing a limited disruption to availability. Exploitation of this issue does not require user interaction. Scope is changed.
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Analysis
by VulDB Data Team • 09/09/2026
The identified vulnerability within Adobe Commerce represents a critical failure in the application's authorization logic, specifically categorized under CWE-269: Improper Privilege Management. This flaw allows an attacker who already possesses high-level privileges to circumvent intended security controls and escalate their access rights beyond what is strictly necessary for their role or task. In modern web applications like Adobe Commerce, which handle sensitive e-commerce data including customer information, payment details, and inventory levels, the principle of least privilege is paramount. When this principle is violated due to incorrect authorization checks, it creates a pathway for unauthorized write operations that can compromise the integrity of the system's data and configuration settings.
From a technical perspective, the core issue lies in how the application validates user permissions before executing administrative actions or modifying database records. The vulnerability suggests that the access control mechanism fails to properly verify whether the authenticated high-privilege user is authorized to perform specific write operations on certain resources. This could stem from flawed logic in role-based access control (RBAC) implementations, where permission checks are either skipped, incorrectly evaluated, or applied inconsistently across different endpoints and API calls. Consequently, an attacker can manipulate requests to trigger actions that should be restricted, effectively bypassing the security features designed to prevent such modifications. This type of flaw is often associated with CWE-862: Missing Authorization, where the software does not perform proper authorization checks before allowing access to resources or functions.
The operational impact of this vulnerability extends beyond simple data modification. While the immediate effect may appear as a limited disruption to availability due to unauthorized changes corrupting system state or configuration, the broader implications involve severe risks to data integrity and confidentiality. An attacker with write access can alter product pricing, manipulate inventory levels, inject malicious code into storefronts through compromised templates or extensions, or exfiltrate sensitive customer data if combined with other vulnerabilities. Furthermore, because exploitation does not require user interaction, this is a remote exploitable flaw that significantly lowers the barrier for attack execution. The attacker only needs valid high-privilege credentials, which might be obtained through credential stuffing, phishing, or session hijacking attacks against administrative accounts.
In terms of threat modeling and adversary behavior, this vulnerability aligns with techniques observed in the MITRE ATT&CK framework, particularly T1078: Valid Accounts, where attackers use legitimate credentials to maintain persistence and move laterally within a network environment. By leveraging these valid high-privilege sessions, an attacker can establish a foothold that allows for deeper infiltration of the e-commerce infrastructure. The change in scope indicates that the vulnerability affects more components or data areas than initially assessed, increasing the potential blast radius of any successful exploitation event. This necessitates a comprehensive review of all administrative interfaces and backend APIs to ensure consistent enforcement of authorization policies across the entire application surface area.
Mitigation strategies must focus on strengthening access control mechanisms and implementing robust validation procedures. Developers should audit the codebase for instances where authorization checks are performed, ensuring that they occur before any write operations or sensitive data modifications take place. Implementing strict role-based access controls with granular permissions can help restrict high-privilege users to only the functions absolutely necessary for their job responsibilities. Additionally, adopting a defense-in-depth approach by integrating web application firewalls (WAFs) configured to detect anomalous administrative activity and employing multi-factor authentication for all privileged accounts can significantly reduce the risk of exploitation. Regular security assessments, including penetration testing focused on authorization bypasses, are essential to identify and remediate such flaws before they can be leveraged in real-world attacks.