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
1,015 results · Clear filters · Feed
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High 7.5
Gogs: Missing Authorization in Attachment Download
Gogs is an open source self-hosted Git service. Prior to 0.14.3, GET /attachments/:uuid returns the raw attachment file without verifying whether the requester has view permission for the associated Issue/Comment/Release or the repository. In a test environme…
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High 7.1
FOSSBilling: IDOR in Servicecustom Client API allows cross-client data access
FOSSBilling is a free, open-source billing and client management system. In versions 0.7.2 and prior, the Servicecustom Client API's __call method accepts an order_id parameter and fetches the associated order without verifying the authenticated client owns i…
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High 7.6
Twenty: Cross-workspace IDOR in AgentTurnResolver
Twenty is an open-source CRM (customer relationship management) platform. Prior to 2.9.0, Twenty was vulnerable to a cross-workspace insecure direct object reference (IDOR) in the AI agent monitor's AgentTurnResolver, in packages/twenty-server/src/engine/meta…
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High 7.7
Daytona: Cross-org IDOR in organization role update/delete — any org owner can rewrite or destroy another org's roles
Daytona is a secure and elastic infrastructure runtime for AI-generated code execution and agent workflows. Prior to 0.185.0, Daytona's organization role update and delete endpoints authorized the caller as an owner of the organization named in the request pa…
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High 8.3
Open WebUI: Forged chat-file link allows cross-user file read and deletion
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI lets an authenticated user attach arbitrary file_id values to their own chat message without checking whether they own or can read th…
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High 8.8
Langflow: IDOR/BOLA in Monitor API — Missing Ownership Enforcement on 7 Endpoints
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.0, Langflow's /api/v1/monitor router exposes 7 endpoints that perform read, write, and delete operations on user-owned resources — messages, sessions, build artifacts,…
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High 8.4
Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another use…
KEV Jul 7, 2026 -
High 8.3
n8n: Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints
n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, the OAuth1 and OAuth2 credential reconnect endpoints authorized access using credential:read rather than credential:update. An authenticated user with read-only access …
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High 7.1
Pega Platform versions 8.3.0 through Infinity 25.1.2 are affected by an authorization weakness that may allow authenticated users to access certain additional data via crafted URLs.
Pega Platform versions 8.3.0 through Infinity 25.1.2 are affected by an authorization weakness that may allow authenticated users to access certain additional data via crafted URLs.
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High 8.1
OpenRemote < 1.25.0 IDOR via Bulk Alarm Deletion Endpoint
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High 7.2
Capgo - Cross-Organization App Takeover via Mismatched org_id and app_id in /private/role_bindings
Capgo before 12.128.2 contains an authorization bypass vulnerability in POST /private/role_bindings that fails to verify app_id ownership during app-scoped role binding creation. An attacker with administrative privileges in one organization can create role b…
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High 7.1
Broken access control in MISP core allows cross-organization unauthorized modification or deletion of analyst data, event reports, collections, templates, and decaying models
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High 8.3
Capgo - Account Merge via Poisoned public.users.email in SSO Provisioning
Capgo before 12.128.12 allows authenticated users to modify their mutable public.users.email to arbitrary addresses, which the SSO provisioning endpoint trusts as an account-merge key. Attackers can pre-position their account with a victim's corporate SSO ema…
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High 7.1
Subsonic API: any authenticated user can delete or read any other user's playlist (IDOR)
gonic is a music streaming server / free-software subsonic server API implementation. Prior to version 0.21.0, the Subsonic API endpoints `/rest/deletePlaylist.view` and `/rest/getPlaylist.view` perform no per-resource authorization. Once authenticated as any…
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High 7.1
Path traversal in getPlaylist/deletePlaylist bypasses ownership check: any authenticated user can read or delete any other user's playlist
gonic is a music streaming server / free-software subsonic server API implementation. The maintainer's fix in commit `6dd71e6a3c966867ef8c900d359a7df75789f410` added an ownership check based on `playlist.UserID`. However, `playlist.UserID` is derived from the…
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High 7.1
Woodpecker gRPC agent_id metadata can be spoofed- cross-tenant agent impersonation
Woodpecker is a CI/CD engine. Starting in version 3.0.0 and prior to version 3.14.1, a vulnerability in Woodpecker CI's gRPC layer allowed any authenticated agent to impersonate any other agent on the same server by injecting a forged `agent_id` value into ou…
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High 7.1
TypeBot: Cross-Workspace Theme Template IDOR (Modification and Deletion)
TypeBot is a chatbot builder tool. Versions 3.15.2 and below have an Insecure Direct Object Reference vulnerability through cross-workspace Theme Template modification and deletion. The handleSaveThemeTemplate and handleDeleteThemeTemplate handlers validate t…
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High 8.2
Steeltoe vulnerable to management-port isolation bypass via spoofed Host header
Steeltoe is an open source project that provides a collection of libraries that helps users build cloud-native applications. When Steeltoe management endpoints versions 3.2.2 through 3.3.0 and 4.1.0 are configured to listen on an alternate port (`Management:E…
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High 8.2
WordPress Clean Login plugin <= 1.15 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in Clean Login <= 1.15 versions.
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High 7.3
WordPress Salon booking system plugin <= 10.30.24 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in Salon booking system <= 10.30.24 versions.
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High 7.1
OpenClaw < 2026.4.25 - Unvalidated Group ID Acceptance in Tool Group Policy
OpenClaw before 2026.4.25 contains an input validation vulnerability in tool group policy callers that accept unvalidated group IDs. Attackers who can supply a group ID to the policy resolver could trigger incorrect group-policy decisions for tool invocations…
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High 7.6
Authorization bypass via path binding override in elixir-grpc/grpc HTTP transcoding
Authorization Bypass Through User-Controlled Key vulnerability in elixir-grpc grpc allows authenticated attackers to access or modify resources belonging to other users by smuggling a conflicting value for any path-bound field via the query string or request …
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High 7.5
WordPress VikRentCar plugin <= 1.4.5 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in VikRentCar <= 1.4.5 versions.
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High 7.5
WordPress EmbedPress plugin <= 4.5.2 - Sensitive Data Exposure vulnerability
Unauthenticated Sensitive Data Exposure in EmbedPress <= 4.5.2 versions.
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High 7.5
WordPress Simple Shopping Cart plugin <= 5.2.9 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in Simple Shopping Cart <= 5.2.9 versions.
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High 7.1
WordPress EventPrime plugin <= 4.3.0.0 - Insecure Direct Object References (IDOR) vulnerability
Subscriber Insecure Direct Object References (IDOR) in EventPrime <= 4.3.0.0 versions.
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High 7.5
WordPress Projectopia plugin <= 5.1.25.2 - Insecure Direct Object References (IDOR) vulnerability
Custom role Insecure Direct Object References (IDOR) in Projectopia <= 5.1.25.2 versions.
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High 7.3
ShopXO Scheduled Task Endpoint Crontab.php GoodsGiveIntegral authorization
A vulnerability was determined in ShopXO up to 6.7.1. This vulnerability affects the function OrderClose/OrderSuccess/PayLogOrderClose/GoodsGiveIntegral of the file app/api/controller/Crontab.php of the component Scheduled Task Endpoint. Executing a manipulat…
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High 8.8
MISP mass assignment vulnerabilities allow unauthorized modification of ownership and delegation records
MISP contained multiple mass assignment vulnerabilities in the handling of collections, tag collections, event delegations, and shadow attributes. Several controller actions accepted user-supplied fields that should have remained server-controlled, including …
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High 8.4
MISP sharing group creation mass assignment allows unauthorized takeover of existing sharing groups
A mass assignment vulnerability exists in MISP’s sharing group creation endpoint. When creating a new sharing group, the controller did not remove a user-supplied id field before saving the submitted data. In CakePHP, supplying a primary key in the save data …
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High 8.8
Naxclow IoT Platform Authorization bypass through User-Controlled key
A flaw in Naxclow's platform’s onboarding workflow allows an attacker to replay a confirm-then-bind sequence to silently reassign a device to an arbitrary account. Because the affected endpoints validate request signatures but do not confirm legitimate owners…
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High 8.8
All V1 collection-level endpoints in ChromaDB's Python project pass None for the tenant and database to the authorizati…
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High 8.8
A lack of authorization validation in version 1.0.0 or later of the ChromaDB Rust project allows any authenticated user…
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High 8.8
ChromaDB allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection
A lack of authorization validation in version 0.4.17 or later of the ChromaDB Python project allows any authenticated users to arbitrarily read, write, update, or delete data in any tenant's collection regardless of which tenant they belong to.
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High 8.3
Quest Bot: AutoMod removal can delete rules from another guild by global rule ID
Quest Bot is an opensource modern Discord Bot built for moderation, utilities and support. Prior to version 1.0.5, the AutoMod remove flow looks up and deletes rules by global database ID without verifying that the rule belongs to the guild where the command …
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High 7.5
Unauthenticated Session History Access via Public Flow Execution
IBM Langflow OSS 1.0.0 through 1.9.1 could allow an authenticated user to read or modify sensitive information by bypassing authentication using insecure direct object references.
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High 7.1
openSIS Classic 9.3 - Insecure Direct Object Reference in Sent Mail
openSIS Classic 9.3 contains an insecure direct object reference vulnerability in the messaging module. Any authenticated user with access to the messaging module can request sent-message details from modules/messaging/SentMail.php by supplying an arbitrary m…
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High 7.7
Authenticated Sharp users can download unrelated Laravel Storage objects through the generic download endpoint
Sharp is a content management framework built for Laravel as a package. Prior to version 9.22.0, Sharp exposes a generic download endpoint that authorizes access only to the supplied Sharp entity instance, but then reads the target storage disk and path from …
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High 8.3CVE-2026-46558 Public exploit
Plane: Cross-workspace asset authorization bypass lets any authenticated user read, copy, delete, and overwrite assets in other Plane workspaces
Plane is an open-source project management tool. Prior to version 1.3.1, there is a cross-workspace asset authorization bypass lets any authenticated user read, copy, delete, and overwrite assets in other Plane workspaces. This issue has been patched in versi…
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High 8.1
BuddyPress 14.4.0 Private Message IDOR via REST API user_id Parameter
BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the messages REST API that allows authenticated attackers to access arbitrary private message threads by supplying a user_id parameter in the request. Attackers can pass another u…