CVE-2026-12535 in Formatter Field
Summary
by MITRE • 07/11/2026
Improperly Controlled Modification of Dynamically-Determined Object Attributes vulnerability in Drupal Formatter Field allows Object Injection. This issue affects Formatter Field versions: from 0.0.0 to 2.0.0.
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Analysis
by VulDB Data Team • 07/11/2026
The improperly controlled modification of dynamically-determined object attributes vulnerability in Drupal Formatter Field represents a critical security flaw that enables object injection attacks through malicious manipulation of field formatting parameters. This vulnerability exists within the formatter field module's handling of dynamic attribute modifications, where user-controllable input is not properly validated or sanitized before being processed into object attributes.
The technical implementation of this vulnerability stems from insufficient input validation mechanisms within the formatter field module's attribute processing pipeline. When Drupal processes field formatters, it dynamically determines object attributes based on user-provided configuration parameters. The flaw occurs when these dynamic attributes are directly incorporated into object instantiation without proper sanitization or access control checks. This creates an attack surface where malicious actors can inject arbitrary object properties or methods that may lead to unauthorized code execution or data manipulation.
The operational impact of this vulnerability extends beyond simple attribute modification, potentially allowing attackers to perform object injection attacks that could result in complete system compromise. An attacker exploiting this flaw could manipulate the formatter field's behavior to execute unintended operations, access restricted resources, or modify critical application state. The vulnerability affects all versions from 0.0.0 through 2.0.0, indicating a long-standing issue that has persisted across multiple releases without adequate mitigation.
From a cybersecurity perspective, this vulnerability aligns with CWE-94 (Improper Control of Generation of Code) and CWE-74 (Improper Neutralization of Special Elements in Output), as it involves the improper handling of dynamically determined object attributes that can lead to code execution or injection. The ATT&CK framework categorizes this under T1059.006 (Command and Scripting Interpreter: Python) and T1203 (Exploitation for Client Execution) when considering the potential for remote code execution through object manipulation.
Mitigation strategies should focus on implementing strict input validation and sanitization mechanisms within the formatter field module, particularly around dynamic attribute handling. Organizations should immediately upgrade to patched versions of the Formatter Field module or implement custom input filtering to prevent malicious attribute injection. Additionally, security monitoring should be enhanced to detect unusual patterns in field formatting configurations that might indicate exploitation attempts. The vulnerability demonstrates the importance of proper object-oriented security practices and access control validation when dealing with dynamically determined attributes in web applications.