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
3,317 results · Feed
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High 8.1
Plane: Any Authenticated User Can Upload and Delete Assets in Any Published Project via /api/public/assets/v2/anchor/{anchor}/
Plane is an open-source project management tool. In 1.3.1 and earlier, EntityAssetEndpoint at the public project asset endpoint /api/public/assets/v2/anchor/{anchor}/ requires authentication for write operations but does not verify workspace or project member…
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High 7.6
InvoiceShelf: Cross-company read/modify/delete of notes via missing company scope in NotePolicy (BOLA/IDOR)
InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.4.0, InvoiceShelf NotesController::show, NotesController::update, and NotesController::destroy authorize onl…
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High 7.1
InvoiceShelf: IDOR in InvoiceShelf estimate-to-invoice conversion allows any company user to read and tamper with other companies' estimates
InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. Prior to version 2.4.0, POST /api/v1/estimates/{estimate}/convert-to-invoice in ConvertEstimateController authorizes only the c…
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High 7.2
InvoiceShelf bulk deletion lacks company scoping
InvoiceShelf is an open-source web & mobile app that helps track expenses, payments and create professional invoices and estimates. In version 2.3.3 and earlier, InvoiceShelf bulk-delete request validation accepts record identifiers without consistently bindi…
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Medium 6.5
Nexent through 2.7.0 Cross-Tenant Knowledge-Base File Read via check_file_access
Nexent through 2.7.0 contains a missing authorization vulnerability in check_file_access that allows authenticated users to read other tenants' knowledge-base files by skipping tenant comparison for knowledge_base/ reads. Attackers in multi-tenant deployments…
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Medium 5.3
Blinko through 1.8.8 Private Attachment Read via /api/file Route
Blinko through 1.8.8 contains a broken access control vulnerability in the /api/file route that allows authenticated users to read other users' private attachments due to a flawed owner check. Attackers can supply another user's stored filename, following a b…
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Medium 4.3
Shopizer through 3.2.5 Authorization Bypass via Product Review customerId
Shopizer through 3.2.5 contains an authorization bypass vulnerability that allows authenticated customers to post reviews as other customers by supplying a customerId field. Attackers can send crafted requests to POST /api/v1/auth/products/{id}/reviews to pub…
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Medium 5.3
AstronRPA through 1.1.6 Cross-Tenant File Disclosure via /file/download
AstronRPA through 1.1.6 contains an insecure direct object reference vulnerability in the resource-service /file/download endpoint that allows authenticated users to download other tenants' files by supplying their fileId. Attackers can enumerate predictable …
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Medium 4.3
lamp-boot 4.16.0-java17 through 4.21.2-java17 IDOR via /anyone/findDeptByCompany
lamp-boot 4.16.0-java17 through 4.21.2-java17 contains an insecure direct object reference vulnerability in the oauth module's /anyone/findDeptByCompany endpoint that skips URI permission checks. Authenticated low-privilege users can iterate sequential employ…
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High 8.1
ServiceNext Insecure Direct Object Reference via GetUsarios
ServiceNext contains an insecure direct object reference (IDOR) in the /api/Usuario/GetUsuarios endpoint, which accepts a user-controlled numeric ID in the request body without verifying that the authenticated token belongs to the requested account (CWE-639).…
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Medium 5.9
Gitea private attachment disclosure through repository mismatch
Gitea's web attachment handler skips its cross-repository ownership check for attachments created before 16 January 2026 and checks permissions against the repository named in the request URL instead. An unauthenticated attacker who knows a private attachment…
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Medium 6.8
Formbricks before 4.9.0 Cross-Organization IDOR in Server Actions via organizationId
Formbricks before 4.9.0 contains an authorization bypass vulnerability in server actions like resetSurveyAction and updateSegmentAction that fail to verify resource ownership against the supplied organizationId. Authenticated owners or managers of any organiz…
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Medium 6.5
youlai-mall through commit 9f62de8 Order Information Disclosure via App Order List
youlai-mall through commit 9f62de8 contains a missing authorization vulnerability that allows authenticated members to view every customer's orders via the app order list endpoint. Attackers can page through the oms_order table using a self-registered account…
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Medium 5.9
REBUILD through 4.5.0 Authorization Bypass via aibot2 Chat Endpoints chatid
REBUILD through 4.5.0 contains an authorization bypass vulnerability in AiBot2Controller /aibot2 endpoints that act on a caller-supplied chatid without verifying ownership. Authenticated low-privilege users can supply another user's chatid to chat-init, chat-…
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Medium 5.4
BizSpring Shop through commit cf22d39daaf1 IDOR via /member/order Cancel and Receive
BizSpring Shop through commit cf22d39daaf1 contains an insecure direct object reference vulnerability in the OrderController cancel and receive handlers that allows authenticated members to act on other members' orders by supplying their orderId. Attackers ca…
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High 7.5
Appointment Booking Plugin <= 5.7.3 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'booking[id]' and 'cart[id]' Parameters
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.7.3 via the `booking[id]` and `cart[id]` parameters on the `steps__relo…
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Medium 4.3
WisdomGarden｜Tronclass - Insecure Direct Object Reference
Tronclass developed by WisdomGarden has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify a specific parameter to view the peer review scores of any student.
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Medium 4.3
WisdomGarden｜Tronclass - Insecure Direct Object Reference
Tronclass developed by WisdomGarden has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify a specific parameter to alter the peer review scores of any student.
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Medium 5.3
Cart Abandonment Recovery for WooCommerce < 2.1.4 - Unauthenticated Abandoned Cart Record Deletion and Modification via IDOR
The Cart Abandonment Recovery for WooCommerce WordPress plugin before 2.1.4 does not verify ownership of the email address used to select an abandoned-cart record before deleting or overwriting it, allowing unauthenticated attackers who know a customer's emai…
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Medium 5.3
Sifalo Pay 2.0 - 2.5.2 - Unauthenticated Payment Confirmation Forgery via an Unbound Transaction Id
The Sifalo Pay WordPress plugin before 2.5.3 does not verify that a payment transaction identifier belongs to the order it is confirming, nor that the requester owns that order, allowing unauthenticated attackers holding one valid transaction identifier from …
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Medium 4.3
rtMedia for WordPress, BuddyPress and bbPress < 4.7.14 - Subscriber+ Arbitrary Album Media Injection via IDOR
The rtMedia for WordPress, BuddyPress and bbPress WordPress plugin before 4.7.14 does not verify that a user owns or may write to the album an upload is assigned to, allowing users with a subscriber-level account or above to place media into another user's pr…
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Low 2.7
WP 2FA < 4.2.0 - Admin+ Arbitrary User 2FA Removal via IDOR
The WP 2FA WordPress plugin before 4.2.0 does not perform an object-level capability check before removing a user's two-factor authentication configuration, allowing a site administrator on WordPress Multisite to remove the 2FA configuration of users outside …
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Medium 4.3
GamiPress < 8.0.6 - Subscriber+ Activity Log Disclosure
The GamiPress WordPress plugin before 8.0.6 does not perform a capability check or ownership verification on one of its authenticated AJAX actions, allowing any authenticated user, such as a Subscriber, to read arbitrary entries from its activity log, includi…
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Medium 5.3
NEX-Forms 9.2.1 - 9.2.5 - Unauthenticated Arbitrary Form Entry Modification via 'nf_set_entry_update_id' Parameter
The NEX-Forms WordPress plugin before 9.3.1 does not perform any authorization, ownership or request-validation checks before updating stored form entries, allowing unauthenticated attackers to overwrite, permanently erase, reassign or append to any previousl…
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Critical 9.8CVE-2026-97657 Public exploit
Abandoned Cart Pro for WooCommerce <= 10.8.0 - Unauthenticated Authentication Bypass via Malleable Encryption and Bypassable HMAC via Recovery Link 'validate' Parameter
The Abandoned Cart Pro for WooCommerce plugin for WordPress is vulnerable to Authentication Bypass via Malleable Encryption and Bypassable HMAC in all versions up to, and including, 10.8.0. This is due to the use of MAC-free AES-CTR encryption for cart-recove…
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Medium 5.3
Database Addon for Contact Form 7 <= 1.4.1 - Unauthenticated Limited File Deletion via Injected 'attackcfdb7_file' Submission Field
The Database Addon for Contact Form 7 – CFDB7 plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to, and including, 1.4.1. This is due to the plugin storing arbitrary (non-form-tag) submission fields in its db7_forms row and the proc…
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Medium 6.9
Authorization bypass through User-Controlled key vulnerability in HYPR Passwordless on Windows allows Privilege Escalat…
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High 8.1
Omnispace Agora Project < 26.10.0 Broken Access Control via setAffectations()
Omnispace Agora Project before 26.10.0 contains a broken access control vulnerability in setAffectations() that allows authenticated attackers to insert access-right records for a caller-supplied target space without verifying the caller has rights to that sp…
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High 7.5
Omnispace Agora Project < 26.10.0 Broken Access Control via MobileFileDownload
Omnispace Agora Project before 26.10.0 contains a broken access control vulnerability in the MobileFileDownload route that allows unauthenticated attackers to download arbitrary files by computing an md5(filename) token instead of passing a proper authorizati…
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High 8.8
CVE-2026-16753
Incorrect authorization in the library-query execution endpoint in Lowcoder version, up to and including 2.4.10, allows an authenticated administrator or developer in one organization to execute a library query belonging to another organization via a crafted …
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High 7.1
Ente: Accepted emergency contact can bypass the recovery notice period
Ente provides end-to-end encrypted cloud services and security tools. Prior to server image 2026.07.09, the POST /emergency-contacts/approve-recovery endpoint authorized approval using a client-supplied userID and updated an emergency recovery session using o…
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Medium 6.5
Skype for Business Elevation of Privilege Vulnerability
Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
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High 8.8
Microsoft PowerShell Security Feature Bypass Vulnerability
Protection mechanism failure in Windows PowerShell allows an authorized attacker to bypass a security feature locally.
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High 8.8
Rapyd Admin 9.0.0 before 9.20.0 Authorization Bypass via UsersModalEditEmbed Component
Rapyd Admin from 9.0.0 before 9.20.0 contains an authorization bypass vulnerability that allows authenticated company members with the default customer role to modify or delete arbitrary user accounts through the UsersModalEditEmbed Livewire component. Attack…
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Medium 5.4
QloApps through 1.7.0 Authorization Bypass via id_hotel in Room Type Creation
QloApps through 1.7.0 contains a broken access control vulnerability that allows hotel-restricted back-office employees to create room types under unassigned hotels by supplying an arbitrary id_hotel. Attackers can enumerate all hotels via the unfiltered room…
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Medium 4.3
ai-fusion-video through 1.2.0 Insecure Direct Object Reference in Generation Task Item Endpoints
Stonewuu ai-fusion-video through 1.2.0 contains an insecure direct object reference vulnerability that allows authenticated users to read other users' generation results by supplying arbitrary task ids. Attackers can enumerate auto-increment task ids on the i…
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Medium 6.5
fuintCatering through commit 122c9e6 IDOR via /clientApi/refund/detail
fuintCatering through commit 122c9e6 contains an insecure direct object reference vulnerability in the ClientRefundController refund detail endpoint that lets authenticated members read other members' refund records. Attackers can register freely and enumerat…
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Medium 4.3
waynboot-mall through 2.0.0 IDOR via Mobile Cart Endpoints
waynboot-mall through 2.0.0 contains an insecure direct object reference vulnerability in the mobile CartController that allows authenticated members to modify or delete other members' cart items. Attackers can enumerate sequential cart ids via PUT /cart, POS…
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Medium 5.4
waynboot-mall through 2.0.0 IDOR via Mobile Address Endpoints
waynboot-mall through 2.0.0 contains an insecure direct object reference vulnerability in AddressController that allows authenticated members to modify or delete other members' shipping addresses. Attackers can enumerate auto-increment address ids and send PO…
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Medium 6.3
waynboot-mall through 2.0.0 IDOR via Mobile Order Endpoints
Waynboot-mall through 2.0.0 contains an insecure direct object reference vulnerability that allows authenticated members to access and modify other members' orders by supplying their order identifiers. Attackers can enumerate sequential order ids or serial nu…