Weakness (CWE)
CWE-862: Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
How to prevent it (5 mitigations)
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Architecture and Design
Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries.
Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
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Architecture and Design
Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
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Architecture and Design
For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page.
One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
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System Configuration, Installation
Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.
Source: MITRE CWE-862
10,637 results · Feed
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Medium 5.0
WordPress PDF for Elementor Forms + Drag And Drop Template Builder plugin <= 5.5.1 - Broken Access Control vulnerability
Missing Authorization vulnerability in ADD-ONS.ORG PDF for Elementor Forms + Drag And Drop Template Builder allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects PDF for Elementor Forms + Drag And Drop Template Builder: f…
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High 8.8
AcyMailing <= 10.8.2 - Missing Authorization to Authenticated (Subscriber+) Privilege Escalation via 'acymailing_router'
The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 10.8.2. This is due to the plugin not properly verifying that a user i…
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Medium 4.3
Missing authorization vulnerability exists in Movable Type. Under certain conditions, when a user without administrator…
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Medium 5.3
Xpro Addons — 140+ Widgets for Elementor <= 1.5.0 - Missing Authorization to Unauthenticated Xpro Template Creation
The Xpro Addons — 140+ Widgets for Elementor plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the get_content_editor function in all versions up to, and including, 1.5.0. This makes it possible for u…
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Medium 4.3
TypeSquare Webfonts for ConoHa <= 2.0.4 - Missing Authorization to Authenticated (Subscriber+) Plugin Settings Modification via 'fontThemeUseType' Parameter
The TypeSquare Webfonts for ConoHa plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 2.0.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible …
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Critical 9.8
Date iCal - Critical - Information disclosure - SA-CONTRIB-2026-037
Missing Authorization vulnerability in Drupal Date iCal allows Forceful Browsing. This issue affects Date iCal: from 0.0.0 before 4.0.15.
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High 8.1
CtrlPanel: Missing Authorization on Admin Write Endpoints Allows RBAC Bypass
CtrlPanel is open-source billing software for hosting providers. Versions 1.1.1 and prior contains a broken access control vulnerability where multiple admin controllers enforce permission checks on form display methods but omit equivalent checks on the corre…
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Medium 6.5
CtrlPanel has Missing Authentication Checks in Datatable Admin Endpoints
CtrlPanel is open-source billing software for hosting providers. In versions 1.1.1 and prior, multiple admin controllers expose DataTable endpoints without authorization checks, allowing any authenticated user to access sensitive administrative data that shou…
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Low 2.1
Discourse has a subscription access bypass in its discourse-subscriptions plugin
Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, a vulnerability in the discourse-subscriptions plugin allows users to gain access to subscription-gated groups without completing payment…
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Medium 6.5
Kirki <= 6.0.6 - Missing Authorization to Authenticated (Subscriber+) Sensitive Form Submission Data Exposure via 'kirki_wp_admin_get_apis' Action
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 6.0.6. This is due to the plugin not properly verifying that a user is authorized to perform an ac…
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High 7.5CVE-2026-47100 Public exploit
Funnel Builder for WooCommerce Checkout < 3.15.0.3 Missing Authorization via AJAX
Funnel Builder for WooCommerce Checkout prior to 3.15.0.3 contains a missing authorization vulnerability in the public checkout endpoint that allows unauthenticated attackers to invoke internal methods and write arbitrary data to the plugin's External Scripts…
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Medium 4.3
WordPress Presto Player plugin <= 4.1.3 - Broken Access Control vulnerability
Missing Authorization vulnerability in Brainstorm Force Presto Player allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Presto Player: from n/a through 4.1.3.
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Medium 6.0
Discourse: Information Disclosure in Form Template API Due to Missing Authorization
Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, an authenticated user on a Discourse instance with the form templates feature enabled can read the name and structured content of form te…
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Medium 5.1
GLPI: Unauthorized export of form structure
GLPI is a free asset and IT management software package. In versions 11.0.0 through 11.0.6, an authenticated user with forms READ permission can export the structure of unauthorized forms. This issue has been fixed in version 11.0.7.
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High 7.1CVE-2026-30950 Public exploit
AutoGPT has Authenticated Session Hijacking via IDOR
AutoGPT is a workflow automation platform for creating, deploying, and managing continuous artificial intelligence agents. Versions 0.6.36 through 0.6.50 are vulnerable to Authenticated Session Hijacking via IDOR. If an authenticated attacker can determine th…
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Medium 5.4
Summarize < 0.15.1 Unapproved Browser Automation Execution
Summarize prior to 0.15.1 contains a missing authorization vulnerability that allows attackers to execute browser automation actions without per-call user approval when the extension automation feature is enabled. Attackers can influence the agent through mal…
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High 7.1
Summarize < 0.15.1 Path Traversal via slidesDir Parameter
Summarize prior to 0.15.1 contains a path traversal vulnerability in the /v1/summarize daemon endpoint that allows authenticated callers to write files to arbitrary directories by supplying an absolute path or directory traversal sequence in the slidesDir req…
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Medium 6.1
Summarize < 0.15.1 Browser Extension Missing Authorization via Content Script
Summarize prior to 0.15.1 contains a missing authorization vulnerability in the content script window.postMessage bridge that allows malicious pages to perform unauthorized operations on automation artifacts. Attackers can simulate runtime messages with spoof…
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Medium 6.5
Missing authorization check in AI message rewrite endpoint allows access to private thread content
Mattermost versions 11.5.x <= 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a …
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Medium 6.5
Instance and webhook GitLab plugin commands were able to be run by non-admin users
Mattermost Plugins versions <=11.5 11.1.5 10.13.11 11.3.4.0 fail to properly check for permissions when processing commands in the Gitlab plugin which allows normal users to uninstall instances or setup webhook connections via the {{gitlab instance {option}}}…
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Medium 4.3
Mattermost fails to enforce create_post permission when editing posts
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check the create_post channel permission during post edit operations which allows an authenticated attacker with revoked posting privileges to modify their existing posts via …
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Medium 5.4
Feeds for YouTube < 2.6.4 - Subscriber+ License Data Deletion
The Feeds for YouTube (YouTube video, channel, and gallery plugin) WordPress plugin before 2.6.4 is vulnerable to unauthorized modification of the Feeds for YouTube (YouTube video, channel, and gallery plugin) WordPress plugin before 2.6.4's license key due t…
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Medium 4.3
Multicollab: Content Team Collaboration and Editorial Workflow <= 5.2 - Missing Authorization to Authenticated (Subscriber+) Collaboration Comment
The Multicollab: Content Team Collaboration and Editorial Workflow plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'cf_add_comment' function in all versions up to, and including, 5.2. This makes…
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Medium 5.3
Essential Chat Support <= 1.0.1 - Missing Authorization to Unauthenticated Settings Reset via 'ecs_reset_settings' Parameter
The Essential Chat Support plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.0.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unau…
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Medium 6.5
Open WebUI: Unauthenticated endpoint can trigger embedding generation (cost/DoS)
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, GET /api/v1/memories/ef is accessible without authentication and executes request.app.state.EMBEDDING_FUNCTION(...). This allows any unauthentic…
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Medium 6.5
Open WebUI: Improper Authorization in Standard Channels Allows Message Updates with Read Permission
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels (i.e., channels whose channel.type is neither group nor dm), the endpoint POST /api/v1/channels/{channel_id}/messages/{mess…
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High 7.1
Open WebUI: Chat completion API allows tool restrictions to be bypassed
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, there is a vulnerability in chat completion API, which allows attackers to bypass tool restrictions, potentially enabling unauthorized actions o…
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High 7.1
Open WebUI: Insecure Message Access Breaks Authorization
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.19, there's an IDOR in the channels message management system that allows authenticated users to modify or delete any message within channels they …
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High 7.3
Open WebUI: Open WebUI Improper Authorization Control
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, the API does not properly validate that the user has an authorized user role of user. By default, when Open WebUI is configured with new sign-…
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High 7.2
Open WebUI: Missing `workspace.tools` Authorization Check on Tool Update Endpoint Allows Privilege Escalation to Code Execution
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, the tool update endpoint (POST /api/v1/tools/id/{id}/update) is missing the workspace.tools permission check that is present on the tool create …
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Medium 5.0
Open WebUI: Mass Assignment via Pydantic extra='allow' Allows Creating Folders in Other Users' Accounts
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, FolderForm uses model_config = ConfigDict(extra='allow'), which permits arbitrary fields to pass through Pydantic validation and be included in …
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High 8.1
Open WebUI: Knowledge Base Destruction and RAG Poisoning via Unauthorized Collection Overwrite
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/retrieval/process/web endpoint accepts a user-supplied collection_name and an overwrite query parameter (default: True). It per…
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High 7.6
Open WebUI: Base Model Routing Bypasses Access Control via Model Chaining
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, Open WebUI supports model composition via base_model_id: a user-defined model (e.g., "Cheap Assistant") can reference an existing base model (e.…
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High 7.1
Open WebUI: responses passthrough endpoint lacks access control authorization
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the /responses endpoint in the OpenAI router accepts any authenticated user and forwards requests directly to upstream LLM providers without enf…
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Medium 4.3
Open WebUI: Global Knowledge Base Enumeration via knowledge-bases Meta-Collection
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the _validate_collection_access function uses an incomplete allowlist that only enforces ownership checks for collections matching user-memory-*…
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Medium 5.4
Open WebUI: Channel Access Grants Bypass filter_allowed_access_grants
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the channel router does not call filter_allowed_access_grants on either create or update paths. A non-admin user who can create group channels (…
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Medium 4.3
Open WebUI: Missing Access Check on Channel Members Endpoint for Standard Channels
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the GET /api/v1/channels/{id}/members endpoint only checks membership for group and dm channel types (lines 467-469). For standard channels — in…
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Medium 6.5
Open WebUI: Unauthorized File and Knowledge Base Content Access via RAG Vector Search
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the type: "file" (non-full-context), type: "text" with collection_name, and bare collection_name/collection_names paths in the get_sources_from_…
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Medium 6.5
Open WebUI: Model Import Overwrites Any Model Without Ownership Check
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/models/import endpoint allows users with the workspace.models_import permission to overwrite any existing model in the database…
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Medium 5.4
Open WebUI: Ollama Model Access Control Bypass via /api/generate, /api/embed, /api/embeddings, and /api/show
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the /api/generate, /api/embed, /api/embeddings, and /api/show endpoints accept any model name from the user and forward the request to the Ollam…