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
175 results · Clear filters · Feed
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Low 2.7
LatePoint < 5.6.5 - Agent+ Arbitrary Order, Customer and Transaction Deletion via IDOR
The Appointment Booking Plugin WordPress plugin before 5.6.5 does not verify that a backend staff user is authorized to act on the specific record targeted for deletion, allowing an authenticated user with a record-scoped staff role to irreversibly delete any…
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Low 2.7
Image Photo Gallery Final Tiles Grid < 3.6.14 - Contributor+ Arbitrary Gallery Cloning, Image Modification and Post Meta Update via IDOR
The Image Photo Gallery Final Tiles Grid WordPress plugin before 3.6.14 does not properly verify authorization on several of its gallery and image management actions, checking ownership against a different object than the one being acted on, or omitting the c…
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Low 2.7
gedelumbung HospitalManagement laporan_data_pasien.php detail authorization
A weakness has been identified in gedelumbung HospitalManagement up to c2d45543789a3887067d3915f69d44cfc2cf76a8. This vulnerability affects the function detail of the file application/modules/admin/controllers/laporan_data_pasien.php. Executing a manipulation…
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Low 3.8
Bookly < 28.3 - Staff+ Appointment and Payment Disclosure, Modification and Deletion via IDOR
The Online Scheduling and Appointment Booking System WordPress plugin before 28.3 does not verify that appointment and payment records requested through its staff-role AJAX actions belong to the requesting staff member, allowing authenticated attackers with a…
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Low 3.1
OpenClaw before 2026.8.1 Session Cancellation Authorization Bypass
OpenClaw versions before 2026.8.1 contain an authorization bypass vulnerability in webhook TaskFlow cancellation that allows attackers to cancel unrelated sessions. An attacker with a webhook route secret can supply an arbitrary child session key to cancel AC…
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Low 2.3
Zammad: Authenticated agents can read AI summary error messages from inaccessible tickets
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, an authenticated user with agent permissions can supply an arbitrary AI analytics run identifier to the ticket summarize endpoint and receive the AI provider error message sto…
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Low 2.7
Sanluan PublicCMS exportExcel/exportData SysUserAdminController.java CmsContentAdminController authorization
A weakness has been identified in Sanluan PublicCMS up to 6.202506.e. This vulnerability affects the function CmsContentAdminController of the file publiccms-parent/publiccms-core/src/main/java/com/publiccms/controller/admin/sys/SysUserAdminController.java of…
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Low 2.7CVE-2026-93661 Public exploit
Events Manager < 7.4.5 - Contributor+ Arbitrary Ticket Overwrite via IDOR
The Events Manager WordPress plugin before 7.4.5 does not stop a ticket-update request from replacing the identifiers of the ticket it was authorized against, letting a user who can manage one event's tickets overwrite and reassign any ticket on the site to t…
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Low 2.7
WPeMatico RSS Feed Fetcher < 2.8.26 - Contributor+ Campaign Configuration and Log Disclosure via IDOR
The WPeMatico RSS Feed Fetcher WordPress plugin before 2.8.26 does not verify ownership or authorization before returning a campaign's stored configuration and run log, allowing users with contributor-level access and above to read the configuration and execu…
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Low 3.1
Hatchet: Cross-tenant durable callback payload disclosure in Hatchet V1 Dispatcher
Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.95.3, the V1 DurableTask stream handler stores worker-supplied task_external_id values in the durableInvocations routing map before tenant ownershi…
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Low 3.1
NextGEN Gallery < 4.5.0 - Authenticated Plugin Image Settings Update
The Photo Gallery, Sliders, Proofing and WordPress plugin before 4.5.0 does not check that a user holds its options capability before saving image sizing settings, allowing users granted only its gallery-management capability by an administrator to change set…
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Low 2.7
NextGEN Gallery < 4.5.0 - Contributor+ Image Metadata Disclosure via IDOR
The Photo Gallery, Sliders, Proofing and WordPress plugin before 4.5.0 does not verify that the requesting user is entitled to a given image record before returning it, allowing users with the Contributor role and above to read the stored metadata of any imag…
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Low 3.1
NextGEN Gallery < 4.5.0 - Authenticated Cross-Gallery Settings Modification via IDOR
The Photo Gallery, Sliders, Proofing and WordPress plugin before 4.5.0 does not verify that the user saving a gallery owns it, allowing any user granted its gallery-management capability by an administrator to overwrite the stored settings of any gallery on t…
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Low 3.8
Hydra Booking < 1.2.2 - Hydra Host+ Cross-Host Booking Deletion and Modification via IDOR
The Hydra Booking — Appointment Scheduling & Booking Calendar WordPress plugin before 1.2.2 does not verify that a booking belongs to the requesting user before modifying or deleting it on two of its booking endpoints, allowing a booking-provider-level user t…
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Low 2.7
MasterStudy LMS 3.6.2 - < 3.7.50 - Instructor+ Student PII Disclosure via IDOR
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not verify that the requesting user owns the course before returning its enrolled-student data, allowing users with the MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50's …
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Low 3.8
MasterStudy LMS < 3.7.50 - Instructor+ Order Status Manipulation via IDOR
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.50 does not perform per-object ownership or capability checks when updating orders through its REST API, allowing users with the Instructor role to modify any order on the site, granting free co…
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Low 3.1
After guessing a 62^15 complex unique identifier, a malicious logged in user was able to retrieve a list of memberships…
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Low 3.7
Event Booking Manager for WooCommerce < 5.3.8 - Unauthenticated Attendee PII Disclosure via Booking Confirmation Panel
The Event Booking Manager for WooCommerce WordPress plugin before 5.3.8 does not perform an ownership or authorization check before rendering booking confirmation details, allowing unauthenticated attackers to retrieve registered attendees' personal informati…
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Low 2.1
Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference (IDOR) in the Express saved search preset delete and edit dialogs allowing an authenticated user with permission on one Express entity to delete or rename saved search pres
Concrete CMS 9.0.0 through 9.5.2 is vulnerable to Insecure direct object reference (IDOR) in the Express saved search preset delete and edit dialogs . An authenticated user holding only view permission on a single Express entity could therefore permanently de…
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Low 2.2
BEAR - Bulk Editor and Products Manager Professional for WooCommerce < 1.2.2 - Authenticated Product Download URL and Meta Disclosure via IDOR
The BEAR WordPress plugin before 1.2.2 does not perform ownership checks on several handlers that return product data by a user-supplied identifier, allowing users who are restricted to their own products to read other owners' product information, including p…
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Low 2.7
Masteriyo LMS 1.14.0 - 3.4.0 - Instructor+ Arbitrary Post Disclosure via IDOR
The Masteriyo LMS WordPress plugin before 3.4.1 does not verify ownership of, or restrict the type of, the records a user requests for download, allowing users with the instructor role to retrieve the full content and metadata of arbitrary posts, including ot…
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Low 3.5
snipe-it 7.0.12 through 8.6.3 Authorization Bypass via Importer
Snipe-IT versions >= 7.0.12 and <= 8.6.3 contain an authorization bypass in the Livewire importer component (App\Livewire\Importer, mounted at the imports.index route). The component only checked the broad 'import' ability at mount time, while its files() and…
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Low 3.7
WP Travel < 12.0.2 - Unauthenticated Booking Payment State Tampering via IDOR
The WP Travel WordPress plugin before 12.0.2 does not properly verify that the requester owns the booking targeted by its bank-deposit slip submission, allowing an unauthenticated attacker who knows the target customer's email address to change that customer'…
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Low 2.2
Kirki 6.0.0 - 6.2.5 - Authenticated Collaboration Comment Status Modification via IDOR
The Kirki WordPress plugin before 6.3.0 does not check that a user is allowed to act on a collaboration comment before changing its state, allowing users whom an administrator has granted content-level access to the page builder to modify comments left by oth…
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Low 2.7
Post Carousel 4.0.0 - 4.0.7 - Contributor+ Private and Protected Post Content Disclosure via saved-templates-duplicate IDOR
The Smart Post WordPress plugin before 4.0.8 does not check the type, ownership or status of the post it is asked to duplicate, allowing users with contributor privileges and above to copy any private or password protected post into a draft of their own and r…
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Low 3.8
Timetics <= 1.0.61 - Staff+ Cross-Staff Appointment Modification via IDOR
The Timetics WordPress plugin through 1.0.61 does not enforce per-object ownership when updating appointments through its REST API, allowing users with its custom staff role to modify, disable, or take over appointments belonging to other staff members.
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Low 3.8
MasterStudy LMS < 3.7.46 - Instructor+ Cross-Course Curriculum Deletion and Tampering via IDOR
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not properly verify ownership of a curriculum object before acting on it, allowing authenticated users with the instructor role to delete or modify curriculum sections and materials belo…
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Low 2.7
MasterStudy LMS < 3.7.46 - Instructor+ Quiz Answer Disclosure via IDOR
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.46 does not properly verify ownership of quiz question identifiers, allowing users with instructor access to read other instructors' quiz questions, including the correct answers and explanation…
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Low 2.7
Rank Math SEO < 1.0.277 - Author+ Robots and Pillar Content Meta Update on Non-Owned Objects via mark_page_as
The Rank Math SEO WordPress plugin before 1.0.277 does not verify that a user is allowed to edit the object being modified before updating its SEO indexing metadata, allowing users with the Author role and above to alter that metadata on content, taxonomy ter…
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Low 2.7
Rank Math SEO < 1.0.277 - Author+ Non-Public Post Content Disclosure via Abilities API
The Rank Math SEO WordPress plugin before 1.0.277 does not verify that the requesting user is permitted to read the specific post referenced in a request before returning its content and SEO metadata, allowing users with the Author role and above to read the …
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Low 3.7
Rank Math SEO < 1.0.277 - Unauthenticated Non-Public Post Schema and Content Disclosure
The Rank Math SEO WordPress plugin before 1.0.277 does not verify that the post whose schema it renders on the front end is publicly viewable, allowing unauthenticated visitors to disclose the schema and associated content of draft, pending, private, schedule…
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Low 3.5
runZero MCP 'Findings summaries' Data Leak
An authorization bypass in the runZero Platform MCP service has been resolved in version 5.1.260826.0. This issue is an instance of CWE-639: Authorization Bypass Through User-Controlled Key and has an estimated CVSS score of CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C…
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Low 2.3
AshPhoenix FilterForm allows filtering across non-public relationships, disclosing private related data
Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_phoenix lets an attacker who controls filter form parameters filter across relationships the resource author marked non-public, turning the returned rows into a boolean oracle o…
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Low 2.3
AshAdmin composite primary key decoding accepts arbitrary fields, enabling a secret-attribute oracle
Authorization Bypass Through User-Controlled Key vulnerability in ash-project ash_admin turns a record-lookup URL into an equality oracle over sensitive attributes. AshAdmin.Helpers.decode_primary_key/2 decodes the composite-primary-key form (Base64 plus ETF)…
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Low 2.7
MasterStudy LMS < 3.7.42 - Instructor+ Cross-Tenant Order Billing PII Disclosure via IDOR
The MasterStudy LMS WordPress Plugin WordPress plugin before 3.7.42 does not correctly restrict access to order information, allowing any user with the instructor role to read other users' order billing details, including name, email address, phone number and…
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Low 2.7
Quiz And Survey Master < 11.2.4 - Contributor+ Cross-Quiz Question Bank and Answer Key Disclosure via IDOR
The Quiz and Survey Master (QSM) WordPress plugin before 11.2.4 does not check authorisation when returning question bank entries through one of its REST API routes, allowing users with a role as low as Contributor to read the questions, hints and correct ans…
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Low 2.7
Tutor LMS < 4.0.6 - Instructor+ Cross-Instructor Private Course Disclosure via IDOR
The Tutor LMS WordPress plugin before 4.0.6 does not enforce per-object ownership checks on its course content type, allowing any user with the instructor role to read the content of private courses belonging to other instructors.
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Low 2.7
Copy & Delete Posts < 1.5.6 - Author+ Password-Protected Post Content Disclosure
The Duplicate Post WordPress plugin before 1.5.6 does not check that a user may read the content of a post before duplicating it, allowing users with a delegated role to republish another user's password-protected post as publicly readable.
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Low 2.7
Quiz And Survey Master < 11.2.4 - Contributor+ Cross-Quiz Email and Results Configuration Disclosure via IDOR
The Quiz and Survey Master (QSM) WordPress plugin before 11.2.4 does not perform a per-object ownership check on the REST routes that return a quiz's email-notification and results-page configuration, allowing users with contributor-level access and above to …
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Low 2.7
Quiz And Survey Master < 11.2.4 - Contributor+ Arbitrary Quiz Text Settings Update via IDOR
The Quiz and Survey Master (QSM) WordPress plugin before 11.2.4 does not perform a per-object ownership check before saving a quiz's front-end text settings, allowing users with contributor-level access and above to modify the text settings of quizzes created…