Skip to content
OpenAdvisories

Weakness (CWE)

CWE-470: Use of Externally-Controlled Input to Select Classes or Code

Base Draft

The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code.

More detail

An attacker could supply values to select unexpected classes or methods. If this occurs, then the attacker could create control flow paths that were not intended by the developer. These paths could bypass authentication or access control checks, or otherwise cause the product to behave in an unexpected manner. This situation becomes a doomsday scenario if the attacker can upload files into a location that appears on the product's classpath (CWE-427) or add new entries to the product's classpath (CWE-426). Under either of these conditions, the attacker can use reflection to introduce new, malicious behavior into the product.

How to prevent it (3 mitigations)

  1. Architecture and Design

    Refactor your code to avoid using reflection.

  2. Architecture and Design

    Do not use user-controlled inputs to select and load classes or code.

  3. Implementation

    Apply strict input validation by using allowlists or indirect selection to ensure that the user is only selecting allowable classes or code.

Source: MITRE CWE-470

All Critical High Medium Low Exploited only Public exploit

10 results · Clear filters · Feed

  • High 8.1
    CVE-2026-108097 Public exploit

    Drupal core - Critical - Remote code execution - SA-CORE-2026-014

    Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Drupal Drupal core allows Reflection Injection. This issue affects Drupal core versions: from 8.9.0 to 10.6.19, from 11.0.0 to 11.3.19, from 11.4.0 to 11.4.10,…

    Drupal Drupal core drupal/core Web / CMS Packagist
  • Critical 9.8
    CVE-2026-116692 Public exploit

    MLflow: Remote code execution on unauthenticated MLflow servers via third-party scorer deserialization importing caller-placed artifact modules

    MLflow is an open source AI engineering platform for agents, large language models, and machine learning models. From 3.12.0rc0 until 3.17.0, third-party scorer deserialization in mlflow/genai/scorers/base.py accepts request-selected descendants of THIRD_PART…

    MLflow MLflow mlflow PyPI
  • High 8.8
    CVE-2026-79987 Public exploit

    Low-privilege RCE through element-search eager loading

    A remote, authenticated, non-admin Craft CMS Control Panel user with only the accessCp permission can execute operating system commands as the PHP web worker.

    craftcms cms
  • Critical 9.4
    CVE-2026-82078 Exploited Public exploit EPSS 63%

    PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector

    An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approv…

    PaperCut PaperCut MF/NG
    KEV Aug 31, 2026
  • High 8.1
    CVE-2026-13181 Public exploit

    RadAsyncUpload AsyncUploadTypeName Type Resolution Vulnerability in Telerik UI for ASP.NET AJAX

    In Progress® Telerik® UI for AJAX prior to v2026.2.708, forged upload metadata can influence AsyncUploadTypeName processing and trigger unsafe attacker-controlled type resolution, enabling remote code execution in affected deployments.

    Progress Software Telerik UI for ASP.NET AJAX
  • High 8.6
    CVE-2026-44011 Public exploit

    Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior

    Craft CMS is a content management system (CMS). From 4.0.0 to before 4.17.12 and 5.9.18, Craft CMS which contains an input-handling flaw in a Yii object creation path that let any authenticated user inject malicious configuration and execute arbitrary command…

    craftcms cms craftcms/cms Packagist
  • High 8.6
    CVE-2026-33157 Public exploit

    Craft CMS: Potential authenticated Remote Code Execution via malicious attached Behavior

    Craft CMS is a content management system (CMS). From version 5.6.0 to before version 5.9.13, a Remote Code Execution (RCE) vulnerability exists in Craft CMS, it can be exploited by any authenticated user with control panel access. This is a bypass of a previo…

    craftcms cms craftcms/cms Packagist
  • Critical 9.8
    CVE-2025-53693 Public exploit EPSS 20%

    HTML Cache Poisoning through Unsafe Reflections

    Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Sitecore Sitecore Experience Manager (XM), Sitecore Experience Platform (XP) allows Cache Poisoning.This issue affects Sitecore Experience Manager (XM): from 9…

    Sitecore Experience Platform (XP) Sitecore Experience Manager (XM)
  • High 8.0
    CVE-2022-41853 Public exploit

    Remote code execution in HyperSQL DataBase

    Those using java.sql.Statement or java.sql.PreparedStatement in hsqldb (HyperSQL DataBase) to process untrusted input may be vulnerable to a remote code execution attack. By default it is allowed to call any static method of any Java class in the classpath re…

    HyperSQL DataBase hsqldb hsqldb org.hsqldb:hsqldb Debian Ubuntu Maven
  • Critical 9.8
    CVE-2021-21985 Exploited · Ransomware Public exploit EPSS 100%

    The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtua…

    Virtualization
    KEV Nov 3, 2021