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
1,891 results · Clear filters · Feed
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Medium 5.8
CordysCRM: Broken object-level authorization in lead pool and account pool detail endpoints exposes arbitrary leads and accounts
CordysCRM is an open source AI-powered customer relationship management system that supports private deployment. Prior to 1.7.4, GET /pool/lead/get/{id} in PoolClueController.get and GET /pool/account/get/{id} in PoolCustomerController.get use bare pool-read …
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Medium 4.2
SysReptor: Unauthorized file disclosure by broken access control in writable shared notes
SysReptor is a fully customizable pentest reporting platform. Prior to 2026.68, an unauthenticated attacker who holds a public read-write note share link can disclose an uploaded file or image from the same project by updating the shared note to reference the…
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Medium 4.3
Kyoo: Transcoder serves uncataloged files from the media directory
Kyoo is a self-hosted media server focused on movies, series, and anime. Prior to 5.1.0, a registered user with the core.play permission could supply a base64-encoded filesystem path to the transcoder. The path handling in transcoder/src/api/path.go cleaned t…
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Medium 4.3
Mealie before 3.21.0 Information Disclosure via Ratings Endpoint
Mealie before 3.21.0 fails to validate user ownership in the ratings and favorites endpoints, allowing authenticated attackers to read any user's recipe ratings and favorites by specifying arbitrary user IDs in the URL path. Attackers can access private recip…
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Medium 6.5
SQLBot through 1.10.1 Improper Access Control via Dashboard Update
SQLBot through 1.10.1 fails to verify dashboard ownership in update_resource and update_canvas endpoints, allowing authenticated workspace members to modify other users' private dashboards. Attackers can supply arbitrary dashboard IDs to rename dashboards and…
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Medium 4.3
LatePoint <= 5.6.3 - Authenticated (Custom+) Insecure Direct Object Reference to Arbitrary Booking Deletion and Customer/Booking Data Disclosure via Abilities REST API (list-bookings, list-customers, delete-booking)
The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.6.3 via the LatePointAbilityDeleteBooking::execute due to missing validation on …
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Medium 6.5
Download Manager <= 3.3.68 - Insecure Direct Object Reference to Authenticated (Contributor+) Sensitive Information Disclosure via 'wpdm_duplicate' Parameter
The Download Manager plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 3.3.68 via the duplicate() function hooked on admin_init. This is due to the handler only verifying the generic 'edit_posts' capabili…
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Medium 5.3
Easy Appointments 4.0 - 4.0.2.1 - Unauthenticated Arbitrary Appointment Modification and Deletion via IDOR
The Easy Appointments WordPress plugin before 4.0.2.2 does not perform an ownership or authorization check on its unauthenticated appointment-reservation endpoint before updating an existing appointment identified by a request-supplied id, allowing unauthenti…
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Medium 6.5
RestroPress <= 3.4.6 - Unauthenticated Order Enumeration and Order Note Modification via Payment Recovery
The RestroPress WordPress plugin through 3.4.6 does not verify ownership in its payment-recovery flow before acting on a request-supplied order identifier, allowing unauthenticated attackers to enumerate which orders are in a recoverable state and to write no…
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Medium 4.3
LatePoint - Appointment Booking & Scheduling <= 5.6.9 - Unauthenticated Insecure Direct Object Reference to Sensitive Information Disclosure via 'customer[id]' Parameter
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.6.9 via the set_customer_object due to missing validation on a user…
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Medium 5.4
WordPress Cooked plugin <= 1.16.0 - Insecure Direct Object References (IDOR) vulnerability
Contributor Insecure Direct Object References (IDOR) in Cooked <= 1.16.0 versions.
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Medium 5.3
WordPress King Addons for Elementor plugin <= 51.1.81 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in King Addons for Elementor <= 51.1.81 versions.
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Medium 4.3
Checkout Field Manager < 7.9.7 - Subscriber+ Arbitrary Attachment Deletion via Unvalidated Attachment ID Reparenting
The Checkout Field Manager (Checkout Manager) for WooCommerce WordPress plugin before 7.9.7 does not properly validate the ownership of an attachment before deleting it, allowing any authenticated user such as a customer to delete arbitrary media attachments …
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Medium 5.3
Motors < 1.4.121 - Unauthenticated Draft/Private Listing Disclosure
The Motors WordPress plugin before 1.4.121 does not verify that a request is authorized to view a user's non-published listings before returning them, allowing unauthenticated attackers to read any author's draft, pending and private car listings - including …
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Medium 6.3
djust: WebSocket/runtime reconstructed request omits the client Host, causing host/subdomain TenantResolvers to misresolve the tenant on the live path
djust provides Phoenix LiveView-style reactive server-side rendering for Django with Rust-powered performance. Prior to version 1.0.7, the WebSocket `handle_mount` and `ViewRuntime._build_request` rebuild an `HttpRequest` via `RequestFactory().get(...)` with …
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Medium 4.4
n8n before 1.123.76 Improper Authorization via Source Control Push
n8n is a workflow automation platform. In n8n versions before 1.123.76, 2.37.7, and 2.38.2, the source control push endpoint derived the set of files to push from the file paths and status supplied in the client request payload instead of from the server-side…
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Medium 4.3
PrestaShop blockwishlist through 3.0.2 Information Disclosure
PrestaShop blockwishlist through 3.0.2 fails to validate wishlist ownership in the getUrlByIdWishListAction method, allowing authenticated customers to retrieve share tokens for any wishlist by identifier. Attackers can supply sequential wishlist identifiers …
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Medium 4.3
PrestaShop psgdpr through 1.4.3 GDPR Log Forgery
PrestaShop psgdpr versions through 1.4.3 fail to validate that GDPR consent log entries are attributed to the authenticated customer. Authenticated attackers can submit arbitrary customer identifiers to create forged consent records for other customers, corru…
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Medium 6.5
ArcherySec through 2.0.6 Information Disclosure via WebScanVulnList
ArcherySec through 2.0.6 fails to validate organization ownership in the WebScanVulnList endpoint, allowing authenticated users to read vulnerability findings from other organizations. Attackers can supply arbitrary scan identifiers to retrieve complete web v…
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Medium 6.3
Tanium addressed an improper access controls vulnerability in Threat Response.
Tanium addressed an improper access controls vulnerability in Threat Response.
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Medium 6.5
IRIS through 2.4.29 Unauthorized Comment Access via Object ID
IRIS through 2.4.29 fails to properly validate case authorization in comment listing endpoints for notes, tasks, IOCs, assets, and evidence items. Attackers with access to any single case can enumerate sequential object identifiers and read comment threads fr…
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Medium 6.5
ContiNew Admin through 4.1.0 Unauthorized Message Deletion via UserMessageController
ContiNew Admin through 4.1.0 contains an authorization bypass vulnerability in the personal message delete endpoint that allows authenticated users to delete other users' messages and announcements. Attackers can supply arbitrary message identifiers in the Id…
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Medium 6.5
TDuck survey form through 5.0 Unauthorized Data Modification
TDuck survey form through version 5.0 contains an authorization bypass vulnerability in the POST /user/form/data/update endpoint that allows authenticated users to overwrite other users' form submission data. Attackers can discover submission identifiers allo…
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Medium 5.4
Blog2Social WordPress Plugin < 9.1.0 Broken Access Control via b2s_calendar_move_post
Adenion Blog2Social plugin for WordPress before 9.1.0 allows low-privileged users to modify the scheduled post records of other users. The b2s_calendar_move_post AJAX handler in includes/Ajax/Post.php issues an UPDATE against the b2s_posts table using only th…
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Medium 4.3
Blog2Social WordPress Plugin < 9.1.0 User Enumeration via AJAX Handler
Adenion Blog2Social plugin for WordPress before 9.1.0 allows low-privileged users to enumerate WordPress user accounts. The b2s_get_select_mandant_user AJAX handler in includes/Ajax/Get.php resolves arbitrary user IDs supplied in the owner parameter to displa…
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Medium 6.5
microservices-platform through 6.0.0 Arbitrary Elasticsearch Index Read via search-center
zlt2000 microservices-platform through 6.0.0 contains an authorization bypass vulnerability in the search-center service that allows authenticated attackers to read any Elasticsearch index by specifying the index name in POST /search/{indexName} and GET /agg/…
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Medium 6.5
Apache Airflow Akeyless provider: Akeyless secrets backend: team-scope guard bypass via user-controlled key
Apache Airflow Akeyless provider: the Akeyless secrets backend's team-scope guard can be bypassed with a user-controlled key. In a multi-team deployment, a Dag author scoped to one team can supply a Variable key containing a path separator that causes the bac…
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Medium 5.3
KBoard < 6.7 - Unauthenticated Board Media Deletion via IDOR
The kboard WordPress plugin before 6.7 does not verify ownership or context before deleting board media, allowing unauthenticated attackers to permanently delete its uploaded media files and their database records by iterating identifiers.
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Medium 5.3
Schema & Structured Data for WP & AMP 1.46 - 1.65 - Unauthenticated Non-Public Comment Content Disclosure via IDOR
The Schema & Structured Data for WP & AMP WordPress plugin before 1.66 does not correctly verify the ownership or the moderation status of a comment before returning its content, allowing unauthenticated users to read the content of comments still awaiting mo…
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Medium 6.5
Sakai: IDOR in Profile Image Deletion Allows Any Authenticated User to Delete Any User's Profile Image
Sakai is a Collaboration and Learning Environment (CLE). From 23.0 until 23.5 and 25.3, the DELETE /api/users/{userId}/profile/image endpoint allows an authenticated user to delete another user's profile image because ProfileController.removeProfileImage() pa…
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Medium 4.3
Vikunja before 2.6.0 Broken Object-Level Authorization via task-position
Vikunja before 2.6.0 fails to validate that user-supplied project_view_id in task-position requests belongs to the task's project. Authenticated attackers can insert task position rows into arbitrary other tenant project views via POST or PUT task-position en…
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Medium 4.3
vikunja before 2.6.0 Team Enumeration via Project Share
vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to enumerate all teams and members. Attackers can attach arbitrary team IDs via the project teams endpoint to retrieve complete team rosters incl…
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Medium 4.3
Jpom through 2.11.12 Workspace Isolation Bypass via /build/branch-list
Jpom through 2.11.12 fails to validate workspace ownership when resolving repositoryId on the /build/branch-list endpoint, allowing authenticated users to access repositories from other workspaces. Attackers can submit repository identifiers from different wo…
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Medium 5.3
Kimai: Improper Authorization in Kimai Project, Customer, and Activity Rate Edit Endpoints Allows Cross-Scope Rate Manipulation
Kimai is an open-source time tracking application. Prior to 2.57.0, GET or POST requests to /en/admin/project/{id}/rate/{rate}, /en/admin/customer/{id}/rate/{rate}, and /en/admin/activity/{id}/rate/{rate} independently resolve the authorized parent identifier…
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Medium 5.3
Kimai: Improper Authorization in Kimai Activity Creation with Preset Project Allows Creation Under Unauthorized Projects
Kimai is an open-source time tracking application. Prior to 2.57.0, GET or POST requests to /en/admin/activity/create/{project} and /en/admin/project/create/{customer} require only the generic create_activity or create_project capability and do not verify edi…
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Medium 5.3
Kimai: Timesheet PATCH/POST allows assigning to project outside user's team via query_builder OR-bypass
Kimai is an open-source time tracking application. Prior to 2.57.0, PATCH /api/timesheets/{id} and POST /api/timesheets accept a user-controlled project identifier through TimesheetApiEditForm and FormTrait, and ProjectRepository::getQueryBuilderForFormType()…
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Medium 6.5
AI Engine <= 3.7.7 - Insecure Direct Object Reference to Authenticated (Subscriber+) Sensitive Attachment Disclosure via 'mediaId' Parameter
The AI Engine – The Chatbot, AI Framework & MCP for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.7 via the 'mediaId' parameter due to missing validation on a user controlled key. Th…
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Medium 4.3
Soft Serve 0.7.1 through 0.11.6 Information Disclosure via LFS Locks
Soft Serve versions 0.7.1 through 0.11.6 fail to scope Git LFS lock queries by repository, allowing authenticated users to read lock metadata from repositories they cannot access. Attackers with write access to any repository can enumerate lock IDs globally t…
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Medium 6.5
IceHRM before 36.0.0 Broken Access Control via Employee ID
IceHRM before 36.0.0 fails to validate employee ownership on seven REST sub-resource endpoints, allowing authenticated employees to read any colleague's HR records. Attackers can substitute arbitrary employee IDs in skill, education, certification, language, …
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Medium 6.5
An issue in Webkul Bagisto 2.4.9 allows a remote attacker to obtain sensitive information via the add-to-cart API and t…