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
1,014 results · Clear filters · Feed
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High 7.6
Vvveb product review authorization bypass allows Vendors to read, approve, edit, or delete reviews under other Vendors' products
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend product review operations allow a low-privileged Vendor to manage reviews under another Vendor's products. The admin/sql/sq…
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High 8.3
Vvveb post revision authorization bypass allows Authors to read, restore, or delete other Authors' post revisions
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend post revision operations allow a low-privileged Author to access revisions for posts owned by another Author. The admin/con…
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High 7.6
Vvveb product question authorization bypass allows Vendors to read, approve, edit, or delete questions under other Vendors' products
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend product question operations allow a low-privileged Vendor to manage questions under another Vendor's products. The admin/sq…
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High 8.3
Vvveb product revision authorization bypass allows Vendors to read, restore, or delete other Vendors' product revisions
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend product revision operations allow a low-privileged Vendor to access revisions for products owned by another Vendor. The adm…
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High 8.8
Vvveb product authorization bypass allows Vendors to read, duplicate, or delete other Vendors' products
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend product operations allow a low-privileged Vendor to access products owned by another Vendor. The admin/controller/product/p…
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High 8.3
Vvveb post authorization bypass allows Authors to view, duplicate, or delete other Authors' posts
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend post operations allow a low-privileged Author to access posts owned by another Author. The admin/controller/content/posts.p…
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High 7.6
Vvveb comment authorization bypass allows Authors to read, approve, edit, or delete comments under other Authors' posts
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend comment operations allow a low-privileged Author to manage comments under another Author's posts. The admin/controller/cont…
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High 8.8
Vvveb digital asset authorization bypass allows Vendors to list, read, edit, or delete other Vendors' digital assets
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.4, Vvveb backend digital asset operations allow a low-privileged Vendor to access digital assets linked to another Vendor's products. The ad…
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High 7.6
Hoppscotch: Cross-user private data exposure and UserHistory IDOR via team GraphQL resolvers
Hoppscotch is an open source API development ecosystem. Prior to 2026.6.0, the team, teamMembers.user, RESTHistory, GQLHistory, currentRESTSession, currentGQLSession, environments, globalEnvironments, and settings GraphQL paths expose another workspace member…
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High 7.5
phpIPAM Temporary Subnet Share Information Disclosure via Address Parameter
phpIPAM through 1.8.1 fails to verify that a requested IP address belongs to the subnet a temporary share token was issued for. In app/temp_share/index.php and app/temp_share/address.php, when the share type is 'subnets', the subnetId parameter is used direct…
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High 8.8
Crawlab Missing Authorization on Password Change Endpoint Allows Account Takeover
Crawlab fails to verify user ownership or administrative role on the password-change endpoint, allowing any authenticated user to reset any account's password. Attackers can enumerate user accounts through the user listing endpoint and change administrator cr…
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High 8.8
openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_key
openssl_encrypt versions before 1.4.0 contain a missing ownership verification vulnerability in the revoke_key method that allows authenticated clients to revoke any other client's key. Attackers can revoke arbitrary keys by providing a valid ML-DSA signature…
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High 8.3
GL.iNet XE3000 WebDAV Service MOVE authorization
A vulnerability was identified in GL.iNet A1300, AX1800, AXT1800, BE1400, BE3600, BE6500, BE9300, BE10000, E5800, MT2500, MT3000, MT3600BE, MT5000, MT6000, X2000, X3000 and XE3000 up to 4.8.x. Affected by this vulnerability is the function COPY/MOVE of the co…
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High 8.6
IDOR in Prospero Flow CRM allows cross-tenant payroll disclosure and creation
Authorization Bypass Through User-Controlled Key in the payroll module in Roskus Prospero Flow CRM before 5.15.10 allows authenticated users holding the read payroll permission to view the salary and banking details of employees of any other company in the in…
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High 8.8
OpenChoreo: Cross-project command execution and wirelog view access via OpenChoreo openchoreo-api exec and wirelogs endpoints
OpenChoreo is a complete, open-source developer platform for Kubernetes. Prior to 1.1.6 and 1.2.3, internal/openchoreo-api/api/handlers/exec.go and internal/openchoreo-api/api/handlers/wirelogs.go authorize component:exec and wirelogs:view using the caller-su…
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High 7.1
Authorization Bypass Through User-Controlled Key in Kibana Leading to Cross-Space Access to Machine Learning Trained Models
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized cross-space access via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). The result is disclosure of inference output from a trained model in a dif…
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High 8.1
Rainbond 6.9.7 Region API Cross-Enterprise IDOR via Tenant Access
Rainbond through 6.9.7 contains a broken access control vulnerability in the CheckToken function that allows authenticated attackers to access unauthorized enterprise resources by substituting another enterprise's tenant name in URL paths. Attackers can use a…
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High 8.6
IDOR in Prospero Flow CRM allows cross-tenant product disclosure and hijacking
Missing Authorization and Authorization Bypass Through User-Controlled Key in the product management component in Roskus Prospero Flow CRM before 5.4.7 allows authenticated users of any company to read the full sensitive data (price, cost, stock, SKU, and bar…
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High 8.1
File Browser before v2.63.22 Authorization Bypass via Recursive Operations
File Browser before v2.63.22 fails to validate access rules for descendants during recursive copy, rename, and delete operations, allowing authenticated users to bypass path-based access controls. Attackers can copy, rename, or delete denied files by operatin…
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High 8.2
WP Helper Premium < 4.7.6 - Unauthenticated Order Data Disclosure and Order Manipulation via Missing Order Key Validation
The WP Helper Premium WordPress plugin before 4.7.6 does not verify the order key when rendering its custom order confirmation page or when handling the related AJAX actions, allowing unauthenticated users to view other customers' order details, including per…
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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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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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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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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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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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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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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…
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High 8.4
Dokploy: Cross-organization authorization bypass in server.remove allows deletion of another organization's server registration
Dokploy is a free, self-hostable Platform as a Service (PaaS). From 0.28.7 until 0.29.13, the server.remove tRPC mutation in apps/dokploy/server/api/routers/server.ts accepts a caller-controlled serverId and calls haveActiveServices, findServerById, removeDep…
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High 8.6
Authorization Bypass Through User-Controlled Key in Prospero Flow CRM contact save and vCard export
Authorization Bypass Through User-Controlled Key in the contact management component in Roskus Prospero Flow CRM before 5.4.8 allows authenticated users of any company to blindly overwrite the contact data of another company and to download that contact's per…