CVE-2026-15083 in ECA Event Condition Action
Summary
by MITRE • 07/11/2026
Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal ECA: Event - Condition - Action allows Object Injection. This issue affects ECA: Event - Condition - Action versions: from 0.0.0 to 2.1.20, from 3.0.0 to 3.0.12, from 3.1.0 to 3.1.4.
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Analysis
by VulDB Data Team • 07/11/2026
This vulnerability represents a critical flaw in Drupal's Event Condition Action (ECA) module that falls under the CWE-94 category of Improper Control of Dynamically-Determined Object Attributes. The issue stems from insufficient input validation and sanitization within the ECA framework, which allows attackers to manipulate dynamically determined object attributes through carefully crafted malicious inputs. When the system processes event conditions and actions, it fails to properly validate or sanitize user-supplied data that influences object attribute modifications, creating an environment where arbitrary object injection can occur.
The technical exploitation of this vulnerability occurs when malicious actors leverage the ECA module's dynamic attribute handling capabilities to inject unauthorized object properties or modify existing ones. This improper control over dynamically determined attributes enables attackers to manipulate the system's behavior by injecting malicious objects that can execute unintended code or alter application logic. The vulnerability is particularly dangerous because it operates at the core of Drupal's event-driven architecture where conditions and actions are processed, allowing for potential privilege escalation or arbitrary code execution depending on the context.
The operational impact of this vulnerability extends beyond simple data manipulation to potentially compromise entire Drupal installations when exploited correctly. Attackers can leverage this flaw to inject malicious objects that may lead to unauthorized access, data exfiltration, or system compromise through various attack vectors including remote code execution. The affected versions span multiple release branches indicating a widespread issue that affects both legacy and newer implementations of the ECA module. This vulnerability directly maps to ATT&CK technique T1059.007 for script injection and T1203 for exploitation for privilege escalation within the attack lifecycle.
Organizations running affected Drupal ECA versions should immediately implement mitigations including patching to the latest stable releases, implementing strict input validation at all points where ECA configurations are processed, and applying web application firewalls with rules designed to detect and block malicious attribute injection attempts. The module's configuration should be reviewed to minimize the scope of dynamic attribute modifications and ensure proper access controls are enforced. Additionally, security monitoring should be enhanced to detect unusual patterns in ECA event processing that might indicate exploitation attempts. System administrators should also consider implementing principle of least privilege for ECA configurations and regularly audit all ECA rules to identify potential injection points. The vulnerability's presence in multiple version ranges emphasizes the importance of comprehensive patch management across all Drupal installations using the ECA module, as any version within the affected ranges represents a potential security risk requiring immediate remediation.