Weakness (CWE)
CWE-639: Authorization Bypass Through User-Controlled Key
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
More detail
It is likely that an attacker would have to be an authenticated user in the system. However, the authorization process would not properly check the data access operation to ensure that the authenticated user performing the operation has sufficient entitlements to perform the requested data access, hence bypassing any other authorization checks present in the system.
For example, attackers can look at places where user specific data is retrieved (e.g. search screens) and determine whether the key for the item being looked up is controllable externally. The key may be a hidden field in the HTML form field, might be passed as a URL parameter or as an unencrypted cookie variable, then in each of these cases it will be possible to tamper with the key value.
How to prevent it (3 mitigations)
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Architecture and Design
For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.
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Architecture and Design, Implementation
Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.
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Architecture and Design
Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.
Source: MITRE CWE-639
3,334 results · Feed
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High 8.8
Authorization Bypass Through User-Controlled Key in eScriptorium
Authorization bypass in the Line, LineTranscription, VirtualCollection, tag and process API endpoints in Scripta/eScriptorium through 26.04.1 allows a remote authenticated user to read, modify and delete other users' transcription content via primary keys sup…
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Medium 6.5
Authorization Bypass Through User-Controlled Key in eScriptorium
Authorization bypass in the process and annotation taxonomy serializers in Scripta eScriptorium through 26.04.1 allows a remote authenticated user to run segmentation and transcription against other users' document parts, overwriting their content, via part p…
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Medium 4.3
WordPress Colissimo Officiel : Méthodes de livraison pour WooCommerce plugin <= 2.10.0 - Insecure Direct Object References (IDOR) vulnerability
Customer Insecure Direct Object References (IDOR) in Colissimo Officiel : Méthodes de livraison pour WooCommerce <= 2.10.0 versions.
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High 7.5
WordPress Formidable Forms Signature Online Contract Automation plugin <= 2.0.1 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in Formidable Forms Signature Online Contract Automation <= 2.0.1 versions.
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Medium 5.3
WordPress Mercado Pago payments for WooCommerce plugin <= 8.9.0 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in Mercado Pago payments for WooCommerce <= 8.9.0 versions.
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Medium 4.3
Improper Implicit Association via User Store Initialization in WSO2 Identity Server [Identity Confusion / External IDP Use]
When secondary user stores are configured, the implicit-association resolver incorrectly initializes from a secondary user store and bypasses the primary user store during search and uniqueness checks. This allows a subject to be associated with an unintended…
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Medium 5.3
PeproDev WooCommerce Receipt Uploader <= 2.8.0 - Unauthenticated Order Receipt Tampering via IDOR
PeproDev WooCommerce Receipt Uploader (PeproDev WooCommerce Receipt Uploader WordPress plugin through 2.8.0 slug: pepro-bacs-receipt-upload-for-woocommerce), all versions up to and including 2.8.0 (latest on wordpress.org; no fixed version available at the ti…
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High 7.1
Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement
IBM Langflow OSS 1.0.0 through 1.10.3 contain an authorization bypass vulnerability in the MemoryComponent that allows authenticated users to access chat history of other users via session_id collision. The MemoryComponent.retrieve_messages and store_message …
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Medium 6.5
Apache Answer: Improper authorization in avatar update cleanup allows authenticated users to delete arbitrary uploaded files by URL
Improper Input Validation vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. A missing ownership check in the avatar-cleanup logic allows any authenticated user to delete other users' uploaded files by supplying their file URLs. …
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Medium 6.5
Akaunting - Cross-Company Media IDOR in Customer Portal Download Endpoint
Akaunting's shared download route (app/Http/Controllers/Common/Uploads.php::download, reachable at uploads/{id}/download behind only generic auth middleware) fetched the requested Media record by ID with no verification that it belonged to the requesting port…
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High 8.2
Crater - Cross-Company IDOR on Notes via Missing Company-Ownership Check in NotePolicy
Crater's NotePolicy checks only a blanket Bouncer ability (manage-all-notes / view-all-notes) with no company-ownership comparison, unlike InvoicePolicy and other sibling policies which additionally verify ->hasCompany(->company_id). Any authenticated user of…
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High 8.2
Crater - Missing Tenant-Ownership Check in CustomerPolicy Allows Cross-Company Customer Data Theft and Deletion
Crater isolates data per company_id, and its Invoice/Estimate/Payment/Expense policies enforce both a Bouncer ability check and ->hasCompany(->company_id). CustomerPolicy's view/update/delete methods omit the company-ownership check entirely, checking only th…
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Medium 6.5
Groundhogg — CRM, Newsletters, and Marketing Automation <= 4.5.2 - Insecure Direct Object Reference
The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.5.2 via the GET /wp-json/gh/v4/contacts/<id> REST endpoint. The endpoint's permission ca…
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Medium 5.3
DHL for WooCommerce < 4.0.1 - Unauthenticated Shipping Label Download via IDOR
The DHL Shipping Germany for WooCommerce WordPress plugin before 4.0.1 does not perform any authorization check (no capability, nonce, login, or ownership check) on one of its shipping-label download endpoints, so an unauthenticated attacker can enumerate seq…
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Low 2.7
MultiVendorX < 5.0.11 - Store Owner+ Cross-Store Commission Data Disclosure via commissions REST Endpoint
The MultiVendorX WordPress plugin before 5.0.11 does not verify that the requested store belongs to the current user in one of its REST API endpoints, allowing any vendor-level user to read other vendors' commission and financial data.
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Medium 6.3
Ehco1996 django-sspanel Support Ticket views.py TicketDetailView authorization
A weakness has been identified in Ehco1996 django-sspanel up to 2023.12.26. This affects the function TicketDetailView of the file apps/sspanel/views.py of the component Support Ticket Handler. Executing a manipulation can lead to authorization bypass. The at…
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Medium 4.3
Open WebUI: Deletion of directories and file embeddings in other knowledge bases via sync cleanup
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request …
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High 8.3
Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, several organization billing endpoints in packages/server/src/enterprise/routes/organization.route.ts and packages/server/src/enterprise/controllers/organ…
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High 8.8
Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the unauthenticated POST /api/v1/prediction/:id endpoint accepted an overrideConfig object and unconditionally spread it into internal flowConfig and flow…
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High 8.5
Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP reques…
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Low 2.7
Brizy - Page Builder < 2.8.19 - Contributor+ Template Type Update via IDOR
The Brizy WordPress plugin before 2.8.19 does not properly verify authorization on the object being modified before updating a template's type meta, validating a request parameter that is different from the one used in the write operation, allowing users with…
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Medium 6.3
diaowen DWSurvey dev-survey.do in DwDeisgnSurveyController.devSurvey. authorization
A vulnerability was found in diaowen DWSurvey up to 6.14.0. Impacted is the function in DwDeisgnSurveyController.devSurvey. of the file /api/dwsurvey/app/v6/dw-design-survey/dev-survey.do of the component Survey Handler. The manipulation results in authorizat…
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Low 2.3
Misskey: Lack of proper permission checks in Direct Messaging feature
Misskey is an open source, federated social media platform. Versions 2025.3.2 and later, but prior to 2026.5.4, contain a vulnerability where a lack of proper permission checks allows access to certain data points from the Direct Messages (formerly Chat) feat…
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Medium 6.3
jeequan jeepay PreAuthorize SysLogController.java WebSecurityConfig authorization
A vulnerability was identified in jeequan jeepay up to 3.2.9. This vulnerability affects the function WebSecurityConfig of the file jeepay-manager/src/main/java/com/jeequan/jeepay/mgr/ctrl/sysuser/SysLogController.java of the component PreAuthorize Handler. T…
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Medium 4.3
Admidio before 5.0.11 IDOR via save_temporary mylist_function.php
Admidio before 5.0.11 contains an insecure direct object reference vulnerability in the save_temporary mode of mylist_function.php that allows authenticated users to hijack list configurations. Attackers can enumerate global list UUIDs and overwrite admin-cur…
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Critical 9.8
IDOR in Menulux Software's Mobile App
Authorization bypass through User-Controlled key vulnerability in Menulux Software Inc. Mobile App allows Software Integrity Attack. This issue affects Mobile App: through 12.05.2026.
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Medium 4.3
Dokan < 5.0.9 - Vendor+ Cross-Vendor Product Attribute Modification via Product Attribute REST API
The Dokan: AI Powered WooCommerce Multivendor Marketplace Solution WordPress plugin before 5.0.9 does not verify product ownership on its product-attribute REST write endpoints, allowing users with a Dokan vendor account to modify the product attributes and d…
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Medium 4.3
Dokan < 5.0.9 - Vendor+ Arbitrary Order Status Modification via orders/bulk-actions REST Endpoint
The Dokan: AI Powered WooCommerce Multivendor Marketplace Solution WordPress plugin before 5.0.9 does not verify order ownership on a REST endpoint that performs bulk order-status changes, allowing users with a Dokan vendor account to modify the status of any…
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Low 2.7
TaxoPress < 3.51.0 - Contributor+ Private Post Disclosure via IDOR
The Tag, Category, and Taxonomy Manager WordPress plugin before 3.51.0 does not verify that a user is authorized to access a referenced post before processing it and returning derived data, allowing users with contributor privileges to disclose data from priv…
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Medium 4.3
Geo My WP < 4.5.5.3 - Subscriber+ Arbitrary Geolocation Record Modification and Deletion via IDOR
The GEO my WP WordPress plugin before 4.5.5.3 does not perform any ownership or capability check on two of its logged-in AJAX actions, allowing users with subscriber-level access or above to modify or permanently delete other users' and posts' geolocation rec…
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Medium 6.5CVE-2026-68582 Public exploit
Vikunja 0.24.0 Broken Object Level Authorization via Link-Share Token
Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level authorization (BOLA) vulnerability in the task-collection endpoint (GET /api/v1/projects/{project}/views/{view}/tasks). The endpoint loads the requested project view from the URL path witho…
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High 7.1
better-auth passkey before 1.4.0 IDOR via delete-passkey
better-auth passkey versions before 1.4.0 contain an insecure direct object reference vulnerability in the passkey deletion endpoint that allows authenticated users to delete arbitrary passkeys by ID. Attackers with valid sessions can submit crafted requests …
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Medium 4.3
ProfileGrid < 5.9.9.8 - Subscriber+ Arbitrary Notification Deletion via IDOR
The ProfileGrid WordPress plugin before 5.9.9.8 does not verify that a notification belongs to the requesting user before deleting it, allowing any authenticated user such as a Subscriber to delete other users' notifications by enumerating notification identi…
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Medium 4.3
FluentBoards < 1.95.3 - Subscriber+ Cross-Board Task Disclosure via IDOR
The FluentBoards WordPress plugin before 1.95.3 does not verify that the items selected for a board import operation belong to a board the requesting user is authorized to access, allowing any authenticated user with member access to a single board to copy an…
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High 7.1
@better-auth/stripe before 1.6.21 Authorization Bypass via Organization Subscription
@better-auth/stripe versions >= 1.4.11 and < 1.6.21, and >= 1.7.0-beta.0 and < 1.7.0-beta.10, contain an authorization bypass in organization subscription actions. The middleware validates the organization ID taken from the request query string against the au…
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High 8.3
better-auth SCIM 1.5.0 before 1.7.0-beta.4 Authorization Bypass
better-auth SCIM versions from 1.5.0 before 1.7.0-beta.4 fail to bind non-organization SCIM providers to their creator by default, allowing authenticated users to manage other users' providers. Attackers can regenerate SCIM bearer tokens, invalidate legitimat…
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Critical 9.9
better-auth SCIM 1.4.0-beta.27 through 1.6.21 Account Takeover via Provider-ID Collision
@better-auth/scim (a better-auth plugin) versions >= 1.4.0-beta.27 through <= 1.6.21 and >= 1.7.0-beta.0 through <= 1.7.0-beta.9 contain an authorization bypass. SCIM token issuance did not reject provider IDs already used by existing SSO, SAML, OIDC, generic…
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Critical 9.8
ArcadeDB before 26.7.2 Authorization Bypass via Database Handlers
ArcadeDB versions before 26.7.2 contain an authorization bypass vulnerability in HTTP handlers for time series, batch, Prometheus, and Grafana endpoints that fail to validate database access permissions. Attackers can access and modify databases they are not …
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Medium 5.3
WooCommerce PayPal Payments <= 3.3.2 - Unauthenticated Sensitive Information Disclosure
The WooCommerce PayPal Payments plugin for WordPress is vulnerable to Sensitive Information Disclosure due to an Insecure Direct Object Reference in all versions up to, and including, 3.3.2 via the `enqueue_paypal_insights_script_on_order_received()` function…
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Low 2.2
Event Tickets < 5.29.0.1 - Contributor+ Seating Layout and Ticket Inventory Modification via IDOR
The Event Tickets and Registration WordPress plugin before 5.29.0.1 does not properly verify authorization on some of its seating actions, allowing users with contributor-level access and above to overwrite the seating layout, ticket inventory, and attendee s…