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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Medium 6.5
CVE-2026-18744
Any authenticated case participant can fetch any OTHER vendor's CaseStatement + per-vul CaseMemberStatus by supplying that member's id — test_func only checks _is_my_case, not ownership of kwargs['member']. Bypasses share_status; leaks embargoed vendor affect…
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Critical 9.8
CVE-2026-18749
The type=track branch authorises on _is_my_case(t_attach.case) only and never checks VinceTrackAttachment.shared. A coordinator-uploaded case artefact that has NOT been marked shared is still retrievable by any case member who has (or is sent) its uuid — leak…
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Medium 5.3
CVE-2026-18750
vinny/views.py: (ModifyEmailNotifications) IDOR: view fetches VinceCommEmail by raw pk from URL and toggles email_function/name without checking the record's contact belongs to the requesting group-admin. Lets a vendor admin flip notification routing (or read…
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Medium 5.8
Provider-credential-controller: provider-credential-controller: cross-namespace credential propagation via attacker-controlled copiedfrom labels bypasses authorization
A flaw was found in the provider-credential-controller component of multicluster-engine (MCE). An attacker with specific permissions on the hub cluster, and knowledge of a prior credential value, could exploit an authorization bypass vulnerability. By manipul…
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Medium 5.3
SiYuan before v3.7.4 Information Disclosure via resolveAssetPath
SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the resolveAssetPath endpoint that returns absolute filesystem paths unmodified to CheckAuth-only requests. Attackers can harvest relative asset paths from published documents an…
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High 8.5
Authorization Bypass Through User-Controlled Key in GitLab
GitLab has remediated an issue in GitLab EE affecting all versions from 19.1 before 19.1.4 and 19.2 before 19.2.2 that under certain conditions could have allowed an authenticated user to cause AI usage to be attributed to another namespace, due to improper a…
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High 8.2
Budibase: Email Change IDOR via POST /api/v2/email allows full Account Takeover (accountId not validated against session)
Budibase is an open-source low-code platform. Prior to 3.40.0, POST /api/v2/email on account.budibase.app accepted a client-controlled accountId without binding it to the authenticated session, while checking only currentEmail. An authenticated attacker who o…
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High 8.7
Microsoft Container Migration Solution Accelerator: Authenticated IDOR allowing read/write/delete processes
The Microsoft Container Migration Solution Accelerator is a multi-service application that provides a multi-agent, AI-driven migration solution for moving container service configurations to Azure Kubernetes Service. In version 2.1.2 and earlier, a security v…
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Medium 6.5
Apache Allura: Missing permission checks IDOR
Insecure Direct Object Reference (IDOR) due to missing permission checks for multiple Artifact types in Apache Allura. This issue affects Apache Allura: before 1.19.1. Users are recommended to upgrade to version 1.19.1, which fixes the issue.
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Medium 5.4
Apache Airflow: Connections test API: team-scope guard bypass resolves another team's environment Connection
Apache Airflow's environment-variable secrets backend resolved a team-scoped Connection or Variable from the wrong team's scope. The guard meant to prevent this only ran when no team scope was supplied, and its pattern could not match a team name containing a…
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High 8.1
Admidio has IDOR in `documents-files.php` `mode=move_save` that lets any folder-uploader exfiltrate files from private folders
Admidio is an open-source user management solution. Prior to version 5.0.10, `modules/documents-files.php` gates state-changing modes by checking that the actor has `hasUploadRight()` on the URL parameter `folder_uuid`. The `move_save` handler then operates o…
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Medium 6.5
Admidio: IDOR in documents-files.php allows cross-folder file rename and description changes by unauthorized uploaders
Admidio is an open-source user management solution. Prior to version 5.0.10, `modules/documents-files.php` mode `file_rename_save` shares the same root-cause shape as the cross-folder move bug (`05-documents-cross-folder-move-idor.md`): the top-level rights c…
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Medium 6.5
Admidio module-administrator can delete or reorder categories owned by other modules via dead authorization check in `modules/categories.php`
Admidio is an open-source user management solution. `modules/categories.php` checks that the supplied `type` parameter (`ANN`, `EVT`, `ROL`, `USF`, …) corresponds to a module the actor administers. The follow-up "is this specific category editable by me" chec…
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Medium 6.5
Admidio: Authorization bypass in file_delete enables cross-folder file removal by authenticated users without delete privileges
Admidio is an open-source user management solution. Prior to version 5.0.10, an authenticated Admidio member with upload rights on any one folder can permanently delete files from folders where they have only view access. The authorization check at the top of…
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Medium 4.3
WP Photo Album Plus < 9.2.09.002 - Subscriber+ Cross-Album File Upload via Missing Authorization
The WP Photo Album Plus WordPress plugin before 9.2.09.002 does not check that the current user is allowed to upload into the album they target when it processes a front-end upload, allowing any authenticated user, such as a Subscriber, to upload files into a…
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Medium 5.3
WP Travel Engine < 6.8.5 - Unauthenticated Booking Details Disclosure and Modification via wte_add_trip_to_cart
The WP Travel Engine WordPress plugin before 6.8.5 does not perform authorization or ownership checks when loading a caller-supplied booking identifier in one of its unauthenticated cart actions, allowing unauthenticated attackers to disclose any customer's b…
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Medium 4.3
WP Crowdfunding < 2.2.1 - Subscriber+ Order Data Disclosure via IDOR
The WP Crowdfunding WordPress plugin before 2.2.1 does not verify order ownership before returning order details, allowing any authenticated users such as Subscribers to read the personal data of any WooCommerce order and enumerate every order in the store.
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Medium 4.3
Eventin < 4.1.20 - Contributor+ Order Information Disclosure via IDOR
The Eventin WordPress plugin before 4.1.20 does not properly restrict access to individual order records, allowing users with contributor-level access and above to read other customers' order data including personal information by iterating order identifiers.
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Medium 4.3
KiviCare < 4.5.2 - Patient+ Cross-Patient Bill, Invoice and Appointment Disclosure via IDOR
The KiviCare WordPress plugin before 4.5.2 does not verify that the requesting user owns the records being accessed, allowing authenticated patient-level users to read other patients' bills, invoices and appointment details.
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Medium 4.3
WP Crowdfunding < 2.2.1 - Subscriber+ Campaign Update Modification via IDOR
The WP Crowdfunding WordPress plugin before 2.2.1 does not verify ownership of a campaign before allowing its update history to be modified and a notification email sent to its backers, allowing any authenticated users such as Subscribers to alter other users…
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Medium 6.4
Multicloud-operators-channel: multicloud-operators-channel: cross-namespace secret and configmap mutation via spec.secretref.namespace confused deputy
A flaw was found in the multicloud-operators-channel component. This vulnerability allows a user with specific permissions to manipulate how the system handles sensitive information, known as Secrets, across different parts of the system (namespaces). By expl…
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High 7.7
Multicloud-operators-subscription: multicloud-operators-subscription: fetchchannelreferences honours channel.spec.secretref.namespace enabling cross-namespace secret exfiltration
A flaw was found in multicloud-operators-subscription. A privileged user, specifically a namespace administrator capable of creating Channel and Subscription resources, can exploit this vulnerability. By manipulating the Channel.Spec.SecretRef.Namespace field…
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Critical 9.9
TypeBot vulnerable to cross-workspace OAuth credential takeover in updateOAuthCredentials via missing object binding
TypeBot is a chatbot builder tool. Versions prior to 3.17.0 allow a low-privilege read collaborator to extract a workspace OAuth `credentialsId` from a readable bot configuration and then overwrite that credential through `handleUpdateOAuthCredentials()` by s…
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Medium 5.4
Snipe-IT Checkout Request Cancellation IDOR
Snipe-IT before 8.6.0 contains an authorization bypass (insecure direct object reference) in the asset checkout-request cancellation endpoint. The cancel_by_admin and requestingUser values are read from user-controlled URL path segments and used without a ser…
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High 8.3
Taubyte Tau v1.1.10 Missing Authorization via GET and DELETE /projects/{id}
Taubyte Tau v1.1.10 contains a missing authorization vulnerability in the services/auth HTTP service that allows any authenticated user to read or permanently delete another tenant's project by supplying an arbitrary project ID to the GET and DELETE /projects…
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Medium 6.5
NetBox 4.5.8 ORM Injection via WritableNestedSerializer
NetBox 4.5.8 contains an ORM injection vulnerability that allows authenticated attackers, including those with read-only API tokens, to inject arbitrary Django ORM lookup expressions into nested object references by supplying crafted JSON dictionary keys in P…
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High 7.1
TypeBot vulnerable to cross-typebot WhatsApp preview webhook resume via global `wa-preview-{phone}` session ids
TypeBot is a chatbot builder tool. In version 3.16.1, an authenticated user who has read access to any typebot can resume a WhatsApp preview webhook session that belongs to a different typebot by mixing an authorized `typebotId` and `blockId` and a foreign pr…
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High 7.8
Visual Studio Code Security Feature Bypass Vulnerability
Authorization bypass through user-controlled key in Visual Studio Code allows an unauthorized attacker to bypass a security feature locally.
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High 7.1
TypeBot vulnerable to cross-typebot webhook resume via unchecked `resultId` lineage allows unauthorized control of another bot's waiting session
TypeBot is a chatbot builder tool. Prior to version 3.17.0, an authenticated user who has read access to any typebot can resume a waiting webhook session that belongs to a different typebot by mixing an authorized `typebotId` and `blockId` and a foreign live …
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High 8.8
CamaleonCMS 2.9.2 Privilege Escalation via Parameter Confusion in UsersController
CamaleonCMS version 2.9.2 and earlier contains a privilege escalation vulnerability via insecure direct object reference (IDOR) that allows authenticated low-privileged attackers to overwrite any user's credentials by exploiting a parameter confusion flaw bet…
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Medium 5.9
ToolJet: Cross-tenant Broken Access Control in ToolJet Database (tooljet-db): any authenticated user can read and write another organization's tables
ToolJet is the open-source foundation am AI-native platform for building and deploying internal tools, workflows and AI agents. Prior to 3.20.207, the ToolJet Database HTTP API in server/src/modules/tooljet-db/controller.ts authorizes operations against the :…
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High 7.1
n8n before 1.123.67 Authentication Bypass via HTTP Request Node
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a credential authorization bypass in the HTTP Request node. An authenticated member with edit access to a shared workflow can reference another user's credential while specifying the credential type via an expr…
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High 7.2
n8n before 1.123.67 Credential Exfiltration via Sub-Workflow
n8n before 1.123.67, 2.31.5, and 2.32.1 validates credential-access only for a node's top-level credentials and not for credentials referenced inside an Execute Sub-workflow node's inline workflow JSON. A member with Editor access to a shared workflow (when w…
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High 7.1
Attendize Attendize - Insecure Direct Object Reference
An insecure direct object reference vulnerability in Attendize through commit 9289acb allows any authenticated event organiser to bulk import attendees into events belonging to other accounts via the postImportAttendee endpoint. The endpoint loads the target …
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High 7.1
Attendize Attendize - Insecure Direct Object Reference
An insecure direct object reference vulnerability in Attendize through commit 9289acb allows any authenticated event organiser to inject attendees and orders into events belonging to other accounts via the postInviteAttendee endpoint. The endpoint loads the t…
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High 7.5
OpenSignLabs OpenSign - Insecure Direct Object Reference
An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to write to any contact record via the updatecontacttour Parse cloud function. The function performs no authentication or authori…
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High 7.5
OpenSignLabs OpenSign - Insecure Direct Object Reference
An insecure direct object reference vulnerability in OpenSignLabs OpenSign through 2.37.0 allows unauthenticated remote attackers to retrieve any contact record via the getcontact Parse cloud function. The function executes with useMasterKey and performs no a…
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High 7.5
Inventec Appliances｜Chiline Cloud - Insecure Direct Object Reference
Chiline Cloud developed by Inventec Appliances has a Insecure Direct Object Reference vulnerability. Unauthenticated remote attackers can modify a specific parameter to read other users' sensitive data.
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Medium 4.3
Missing Authorization check in SAP S/4 HANA (Reprocess Bank Statement Items)
Reprocess Bank Statement Items in SAP S/4HANA does not perform the necessary authorization checks for authenticated users, allowing them to use rules that have not been shared with them, resulting in privilege escalation.This vulnerability has a low impact on…
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High 7.1
Data-sciences-pipeline: user-controlled serviceaccount for workflow pods without authorization check — confused deputy
A flaw was found in Data Science Pipelines. A restricted user, or tenant, can exploit an improper authorization vulnerability in the setDefaultServiceAccount function. By specifying a more privileged ServiceAccount (SA) during a CreateRun request, an attacker…