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
3,309 results · Feed
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Medium 6.5
VitaFit Cloud API IDOR via profile_id Endpoints
VitaFit cloud API before 2026-10-30 contained an insecure direct object reference vulnerability that allows authenticated attackers to access another user's data by supplying a different user_id or profile_id to endpoints such as GET /front/profile/{profile_i…
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Medium 6.5
Readest: Subscription/entitlement hijack: /api/stripe/check binds any paid Checkout Session to the caller
Readest is a modern, feature-rich ebook reader designed for seamless cross-platform access and an intuitive reading experience. Prior to 0.11.10, POST /api/stripe/check in apps/readest-app/src/app/api/stripe/check/route.ts accepted a client-controlled session…
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High 7.3
6amTech 6valley Social Login Flow existing-account-check existingAccountCheck authorization
A vulnerability was identified in 6amTech 6valley 16.0. Impacted is the function existingAccountCheck of the file /api/v1/auth/existing-account-check of the component Social Login Flow. Such manipulation of the argument user_response leads to authorization by…
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High 8.8
GPUStack: Missing authorization on several cluster and resource endpoints allows cross-user access and cluster takeover
GPUStack is an open-source GPU cluster manager for AI model serving and GPU instance provisioning. From 2.2.0 until 2.2.2, cluster_apiserver_proxy forwarded an authenticated non-administrator's requests to a selected Kubernetes cluster without a resource-leve…
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High 8.2
Telepresence: Tunnel endpoint accepts caller-supplied session ID with no ownership proof — active client sessions hijackable
Telepresence enables local development against a remote Kubernetes or OpenShift cluster. Prior to 2.31.0, the Traffic Manager Tunnel gRPC streaming endpoint parses a session ID from the first bytes of a caller-controlled message in pkg/tunnel/message.go and p…
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Medium 6.5
Invoice Ninja < 5.13.28 Broken Access Control via Vendor Portal
Invoice Ninja before 5.13.28 contains a broken access control vulnerability that allows authenticated vendor-portal contacts to access documents belonging to other vendors and clients by exploiting authorization checks that validate only company_id scope inst…
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Medium 6.5
GetPaid WordPress Plugin < 2.8.63 Authorization Bypass via maybe_use_invoice
The GetPaid plugin for WordPress before 2.8.63 contains an authorization bypass vulnerability that allows unauthenticated attackers to access and manipulate another user's invoice by supplying its ID through the maybe_use_invoice parameter in process_invoice(…
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Medium 6.8
Warpgate: Kubernetes authorization correlation can be reused by a recreated same-name account
Warpgate is an open source SSH, HTTPS, and MySQL bastion host for Linux. From 0.21.0 until 0.29.0, the Kubernetes request correlator in warpgate-protocol-kubernetes/src/correlator.rs keys an authorized AdmittedTarget by username, target_name, and client IP ra…
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Medium 6.5
Oqtane Framework before 10.3.0 Broken Access Control via SettingController
Oqtane Framework before 10.3.0 contains a broken access control vulnerability in SettingController.cs that allows an authenticated site administrator to read and modify settings belonging to other sites within the same tenant database by supplying an arbitrar…
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High 7.6
CoopCycle coopcycle-web before 6.20.1 IDOR via Incident Resource and Action Endpoint
CoopCycle coopcycle-web before 6.20.1 contains a broken access control vulnerability that allows any courier to read and modify every incident because Incident operations only check ROLE_COURIER. Attackers can enumerate sequential incident ids and use PUT /ap…
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High 8.8
Stonewuu ai-fusion-video before 1.3.0 IDOR via Project, Asset and Script Controllers
Stonewuu ai-fusion-video before 1.3.0 contains an insecure direct object reference vulnerability that allows authenticated users to access other users' projects by supplying unscoped object ids. Attackers can enumerate auto-increment ids on /api/project, /api…
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Medium 5.3
langchain4j-aideepin before 3.31.0 IDOR via GET /character/{uuid}
langchain4j-aideepin before 3.31.0 contains an insecure direct object reference vulnerability that allows authenticated users to read other users' character-chat conversations by supplying their character uuid. Attackers can request GET /character/{uuid}, whi…
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Low 3.1
loonflow before r3.2.3 IDOR via ticket_flow_history Endpoint
loonflow before r3.2.3 contains a missing authorization vulnerability in TicketFlowHistoryView that allows any authenticated user to read other users' ticket flow history by supplying a ticket UUID. Attackers can request the ticket_flow_history endpoint, whic…
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High 7.5
About Time Technologies｜Herowatch Go Server - Insecure Direct Object Reference
Herowatch Go Server developed by About Time Technologies has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify specific parameters to access or operate other users' data and functions.
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Medium 5.4
Premium Packages < 7.3.1 - Subscriber+ Guest Order Takeover
The Premium Packages WordPress plugin before 7.3.1 does not verify that a user claiming a guest order is the original buyer, allowing any authenticated user to take ownership of any unclaimed guest order, and thereby read the buyer's billing details and downl…
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Low 3.7
Premium Packages < 7.3.1 - Unauthenticated Guest Order Status Disclosure
The Premium Packages WordPress plugin before 7.3.1 does not verify that the requester owns a guest order before returning its details, allowing unauthenticated visitors who know a guest order's identifier to view its order status, payment status and total.
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Medium 6.5
Essential Real Estate 4.4.3 - 5.3.4 - Subscriber+ Arbitrary Media Attachment Deletion via IDOR
The Essential Real Estate WordPress plugin before 5.3.5 does not verify that a media attachment belongs to the requesting user before deleting it, allowing a self-registered customer-level user to delete other users' media library attachments, including those…
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Low 3.8
FV Flowplayer Video Player < 7.5.56.7212 - Contributor+ Arbitrary Video and Meta Record Deletion, Video Modification and Meta Disclosure via IDOR
The FV Flowplayer Video Player WordPress plugin before 7.5.56.7212 does not properly verify record ownership before modifying or deleting stored video and meta records, allowing authenticated users with Contributor-level access and above to modify or delete a…
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Medium 4.3
InfiniFlow RAGFlow Text To SQL Retrieval sql.go RunSQL authorization
A security flaw has been discovered in InfiniFlow RAGFlow up to 0.27.2/1.0.0-rc2. This impacts the function RunSQL of the file internal/engine/infinity/sql.go of the component Text To SQL Retrieval. The manipulation of the argument tableName/kbIDs results in …
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Medium 6.3
Sanluan PublicCMS TradePaymentService.java TradePaymentService.pendingRefund authorization
A vulnerability was identified in Sanluan PublicCMS 5. This affects the function TradePaymentService.pendingRefund of the file publiccms-parent/publiccms-trade/src/main/java/com/publiccms/logic/service/trade/TradePaymentService.java. The manipulation of the a…
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Medium 6.5
Umami Record API Endpoint route.ts authorization
A vulnerability has been found in Umami up to 3.4.1. Impacted is an unknown function of the file src/app/api/record/route.ts of the component Record API Endpoint. Such manipulation of the argument Website leads to authorization bypass. The attack may be launc…
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Medium 6.5
ZaneOps 1.14.0 before 1.15.2 Cross-Workspace Information Disclosure via ReviewPreviewEnvDeployAPIView
ZaneOps 1.14.0 before 1.15.2 contains an authorization bypass vulnerability that allows any workspace administrator to read another workspace's pending preview environment by querying ReviewPreviewEnvDeployAPIView without project scoping. Attackers can use th…
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Low 2.7
RosarioSIS before 12.9 Improper Authorization via Student Billing Mass Assignment
RosarioSIS before 12.9 contains an improper authorization vulnerability that allows school-scoped administrators to assign fees and payments to students of other schools via MassAssignFees.php and MassAssignPayments.php. Attackers can substitute foreign stude…
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Medium 6.5
Tanium addressed an improper access controls vulnerability in Discover.
Tanium addressed an improper access controls vulnerability in Discover.
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Medium 4.2
Lightdash 0.2609.0 before 3.137.0 Cross-Project IDOR via RenameService Dashboard Endpoints
Lightdash 0.2609.0 before 3.137.0 contains an authorization bypass vulnerability in the RenameService that allows authenticated users with update Project permission on one project to access and modify dashboards belonging to a different project, caused by the…
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Medium 4.3
Authorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosure
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to information disclosure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user with read access to connectors in one Kibana space can retrie…
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Medium 4.3
Authorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosure
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana Machine Learning can lead to information disclosure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user with Machine Learning read access in one Kib…
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High 7.6
AshAuthentication TOTP setup lets a user install their own authenticator secret on another user's account
Authorization Bypass Through User-Controlled Key vulnerability in team-alembic ash_authentication allows a user with an account to install a TOTP secret they control on another user's account, and then sign in as that user or hold their second factor. AshAuth…
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High 7.1
LogChimp before 0.9.3 Authorization Bypass via PATCH /api/v1/posts
LogChimp 0.9.0-alpha.1 before 0.9.3 contains an authorization bypass vulnerability that allows authenticated post authors to modify any other post by supplying mismatched postId and id body parameters. Attackers can set postId to their own post and id to an e…
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Medium 4.3
AuditPilot before commit 4669c93 RAG Project-Scope Authorization Bypass via project_id
AuditPilot before commit 4669c93 contains an authorization bypass vulnerability in _metadata_allowed in rag/agentic_rag.py that allows authenticated users to read other projects' knowledge by supplying project_id. Attackers with read:knowledge scoped to one p…
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High 8.3
FastBee through 2.1.0 IDOR via /iot/product By-ID Endpoints
FastBee through 2.1.0 contains an insecure direct object reference vulnerability in ProductController that allows authenticated tenant users to access other tenants' products by supplying their product IDs. Attackers can enumerate sequential product IDs to re…
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Medium 4.3
Frappe HRMS before 15.61.0 Permission Bypass via Expense Claim Advances API
Frappe HRMS before 15.61.0 contains a permission bypass vulnerability that allows authenticated employees to view other employees' expense advance details due to improper authorization checks. Attackers can query the Expense Claim Advances API to retrieve exp…
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Medium 6.9
Direct Object Reference (IDOR) vulnerability in Alosuite
Direct Object Reference (IDOR) vulnerability in Alosuite due to insufficient authorization checks when processing object identifiers. By modifying the identifier provided to the ‘/Companies/Edit/{id}’ endpoint, an attacker can access information associated wi…
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Medium 6.9
Information Disclosure in extension "Mail" (mail)
The click tracking middleware does not validate the authentication code of a recipient if the code is omitted. Unauthenticated attackers can retrieve personal data of newsletter recipients, which is inserted into links of sent mails.
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High 8.8
Broken Access Control in extension "Frontend User Registration" (sf_register)
The actions linked in the emails of the extension (e.g. to confirm a registration or the deletion of an account) do not reject requests with a missing or invalid hash. Instead, the frontend user given in the request is used. Unauthenticated attackers can ther…
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Medium 6.5
Munshi IDOR via Purchase Inquiry Thread Endpoint
Munshi (by Petpooja) before 2026-06-17 contained a broken object level authorization vulnerability that allows authenticated attackers to access another user's purchase inquiry by manipulating the thread identifier in the GET /purchase-inquiry/thread/{thread-…
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Medium 6.5
Munshi Broken Object Level Authorization via Invoice Deletion API
Munshi (by Petpooja) before 2026-07-28 contained a broken object level authorization vulnerability that allows authenticated sub-users to delete invoices belonging to the tenant owner by exploiting the DELETE /api/invoice/{invoice_id} and POST /api/invoices/b…
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Medium 5.3
Joomla Extension - dj-extensions.com - IDOR vulnerability allowing cross-account ad access in DJ-Classifieds < 3.11.3
Joomla Extension - dj-extensions.com - IDOR vulnerability allowing cross-account ad access in DJ-Classifieds < 3.11.3 - A “duplicate my ad” convenience feature on the new-ad form (site/models/additem.php) loaded an existing advert by its raw numeric ID with n…
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High 8.4
Krill treats a "local parent" as already-authenticated, letting a CA operator act as any child of any CA on the same server
When a CA's parent lives on the same Krill server: instead of building and verifying a signed CMS message, it runs the RFC 6492 provisioning exchange in-process and trusts the child identity (child_handle) that the caller put in the parent contact. Nothing ch…
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High 8.4
Krill users restricted to one CA can make any other CA delegate its prefixes and publish ROAs for them via bulk import
The vulnerability gives a role that is restricted to a list of CAs (cas = [...]) its full permission set for every request that is not tied to a CA, including the bulk import endpoint POST /api/v1/bulk/cas/import. It adds a new child CA under any existing CA,…