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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High 8.3
Coze Studio through 0.5.1 Cross-Space Workflow IDOR via Workflow API Handlers
Coze Studio through 0.5.1 contains an insecure direct object reference vulnerability in workflow.go that allows authenticated users to access other spaces' workflows by supplying foreign workflowIDs. Attackers can pair their own spaceID with another tenant's …
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High 8.3
Langflow OSS Authorization Bypass Through User-Controlled Key
IBM Langflow OSS 1.0.0 through 1.12.4 contains three message endpoints that perform no ownership verification. Any authenticated user can bulk-delete another user's messages, overwrite message content to inject malicious prompts, or hijack an entire conversat…
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High 8.1
Camunda Missing Authorization in Task Sub-Resources
Camunda 7.24.0 before 7.24.14 and 7.23.0 before 7.23.17 contains a missing authorization check vulnerability in engine-rest task sub-resources that allows authenticated attackers with no permission grants to access task comments and attachments by calling sin…
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Medium 4.3
FlyCms through commit edfdf724 Missing Authorization via Action Counter Endpoint
FlyCms through commit edfdf724 contains a missing authorization vulnerability in ActionService.counter() that allows authenticated users to modify other users' content rows because checkRowOwner never verifies ownership. Any registered user can send requests …
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High 7.1
Krayin CRM before 2.2.7 Broken Object Level Authorization in Mail Module
Krayin CRM before 2.2.7 contains a broken object level authorization vulnerability in EmailController write actions that allows scope-restricted authenticated users to manipulate other users' emails by supplying their numeric IDs. Attackers can call update, d…
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Medium 6.5
Krayin CRM before 2.2.7 IDOR via Quote Search and Lead-Products Endpoints
Krayin CRM before 2.2.7 contains an insecure direct object reference vulnerability that allows scope-restricted authenticated users to read other users' quotes by bypassing per-user data scope checks in QuoteController. Attackers can query the quotes search a…
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Medium 4.6
Frappe Helpdesk before 1.26.0 Authorization Bypass via raised_by in Ticket Creation
Frappe Helpdesk before 1.26.0 contains an authorization bypass vulnerability that allows authenticated portal users to create tickets impersonating other customers by supplying a raised_by value. Attackers can call the hd_ticket.api.new endpoint with a victim…
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Medium 4.3
WordPress Event Tickets plugin <= 5.30.1 - Insecure Direct Object References (IDOR) vulnerability
Authorization Bypass Through User-Controlled Key vulnerability in Liquid Web / StellarWP Event Tickets event-tickets allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Event Tickets: from n/a through 5.30.1.
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Medium 5.3
TrueBooker Appointment Booking 1.1.9 - 1.2.9 - Unauthenticated Customer PII Disclosure via IDOR in 'refappbkd' Parameter
The TrueBooker WordPress plugin before 1.3.0 does not verify that the requester owns a booking before rendering its confirmation summary, allowing unauthenticated attackers to enumerate booking identifiers and retrieve the personal information of customers wh…
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Medium 6.3
calcom cal.com/cal.diy Webhook util.ts createWebhookProcedure authorization
A weakness has been identified in calcom cal.com and cal.diy up to 6.2.0. Impacted is the function createWebhookProcedure of the file packages/trpc/server/routers/viewer/webhook/util.ts of the component Webhook Handler. Executing a manipulation of the argumen…
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Medium 6.3
Gitea release attachment re-linking of issue attachments
Adding attachments to a release checked the repository and release of an attachment but not whether it was already linked to an issue or comment. A user with write access to the releases of a repository, who knew the UUID of an attachment in that repository, …
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Low 3.1
Teable before 2026-10-12T12-45-53Z.3331 Authorization Bypass via Folder Rename Endpoint
Teable before 2026-10-12T12-45-53Z.3331 contains an authorization bypass vulnerability that allows authenticated users to rename folders in other bases by supplying a foreign folderId. The PATCH /api/base/:baseId/node/folder/:folderId endpoint checks base|upd…
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High 7.5
WordPress Electronic Signature Add-on for Fluent Forms plugin <= 2.0.5 - Insecure Direct Object References (IDOR) vulnerability
Authorization Bypass Through User-Controlled Key vulnerability in WP E-Signature Electronic Signature Add-on for Fluent Forms signature-fluent-contract-forms-add-on allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Ele…
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Medium 6.5
Modern Events Calendar Lite < 7.36.4 - Subscriber+ Arbitrary Post Modification via IDOR
The Modern Events Calendar Lite WordPress plugin before 7.36.4 does not verify that a user is authorized to edit the target post before updating it, allowing authenticated users with the Subscriber role to modify the title, content, and excerpt of arbitrary p…
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Medium 6.5
Admidio 5.0.0 before 5.0.16 IDOR via Forum Topic Update
Admidio from 5.0.0 before 5.0.16 contains an insecure direct object reference vulnerability in ForumService::saveTopic() that allows authenticated members to modify other users' forum topics. Attackers can replace the topic_uuid parameter in their own topic_s…
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High 8.3
phpMyFAQ 4.0.0 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta BOLA in FAQ Update via REST API
phpMyFAQ 4.0.0 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains a broken object-level authorization vulnerability in the PUT /api/v3.1/faq/update endpoint, which checks only the global edit_faq permission and does not verify access to the target FAQ. A…
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Medium 6.0
phpMyFAQ 3.2.0 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta IDOR Leaks TOTP Secret via /admin/api/user/data
phpMyFAQ 3.2.0 before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains an insecure direct object reference vulnerability in GET /admin/api/user/data/{userId}, which returns any user's full faquserdata row, including the live TOTP secret, without a SuperAdmin …
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Medium 5.3
phpMyFAQ 4.2.0-alpha before 4.2.0-beta Authorization Bypass via Comments and Attachments API
phpMyFAQ 4.2.0-alpha before 4.2.0-beta contains an authorization bypass vulnerability in isFaqAccessibleForUser() that treats a missing FAQ translation as visible to unauthenticated users. Attackers can send a mismatched Accept-Language header to the comments…
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Medium 4.3
Tutor LMS <= 4.1.0 - Insecure Direct Object Reference to Authenticated (Author+) Arbitrary Course Modification and Ownership Takeover via 'ID' Parameter
The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.1.0 via the 'ID' parameter due to missing validation on a user controlled key. This makes it po…
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High 7.5
Kirki <= 6.3.2 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Exposure via Context Smuggling via 'context' Parameter
The Kirki – Freeform Page Builder, Website Builder & Customizer plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 6.3.2 via the 'context' parameter due to missing validation on a user controlled key. …
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High 8.1
Tandoor Recipes: Private recipe authorization bypass via /api/step/ - read and modify another Space member's private recipe content
Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.12, StepViewSet and IngredientViewSet filter only by active Space and use role-level CustomIsUser checks instead of the private-recipe owner or s…
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High 7.1
Tandoor Recipes: Private recipe file and share-link authorization bypass in recipe utility API endpoints
Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.10, recipe utility endpoints retrieve same-Space Recipe objects without invoking the private-recipe owner or sharing permission when an authentic…
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High 8.1
LingGuo-Drama through commit 8a6924a IDOR via /admin/v1/projects/:id API
LingGuo-Drama through commit 8a6924a contains an insecure direct object reference vulnerability that allows registered users to access other users' projects because projects.Get lacks an owner check. Self-registered attackers can iterate numeric IDs via GET, …
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Medium 5.4
Open WES through 1.0.0 Broken Access Control via GlobalGatewayFilter Warehouse Scoping
Open WES through 1.0.0 contains an authorization bypass vulnerability that allows authenticated users to modify other warehouses' stock records because GlobalGatewayFilter never enforces auth_warehouse scoping. Attackers holding the menu permission can enumer…
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Medium 4.3
Arkon through 0.9.2 Missing Authorization via Skills Versions API
Arkon through 0.9.2 contains a missing authorization vulnerability in list_skill_versions that allows authenticated employees to read other departments' skill version metadata by bypassing the can_access_skill check. Attackers holding the default skill:read p…
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Medium 5.4
Arkon through 0.9.2 Broken Access Control via Sources By-ID Routes
Arkon through 0.9.2 contains a broken access control vulnerability that allows authenticated employees to read and modify other departments' sources because by-id routes in app/routers/sources.py skip can_access_document. Attackers can call the plan, progress…
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Medium 4.3
Arkon through 0.9.2 Missing Authorization via Wiki Graph Neighborhood API
Arkon through 0.9.2 contains a missing authorization vulnerability in GET /api/wiki/graph that lets authenticated employees read other departments' wiki metadata by supplying a foreign slug. Attackers with only wiki:read:own_dept permission can query get_neig…
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Medium 5.4
WhaTicket Community through commit cf04795 IDOR via /tickets/:ticketId and /messages/:ticketId
WhaTicket Community through commit cf04795 contains an insecure direct object reference vulnerability that allows authenticated agents to access other agents' tickets because ShowTicketService performs no ownership or queue checks. Attackers can supply anothe…
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Medium 5.3
99AI through 4.3.0 IDOR via /api/chatLog/querySingleChat Chat Message Disclosure
99AI through 4.3.0 contains an insecure direct object reference vulnerability that allows unauthenticated attackers to read other users' chat messages because querySingleChat lacks an owner check. Attackers can send a fingerprint header to obtain a visitor JW…
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Medium 4.3
Fuint through commit 57ec018 IDOR via bookId in myBookDetail
Fuint through commit 57ec018 contains an insecure direct object reference vulnerability that allows authenticated members to read other members' booking records by supplying arbitrary bookId values to /clientApi/book/myBookDetail. Attackers can iterate the au…
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Medium 6.3
yshop-crm through 2.1.3 IDOR via CRM customer by-id endpoints
yshop-crm through 2.1.3 contains an insecure direct object reference vulnerability that allows authenticated sales users to access other users' customer records by supplying arbitrary ids. Attackers can enumerate ids against the get, update, delete and do-ope…
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High 7.5
ChatOllama through commit 96c3ce5 IDOR Exposes Private Knowledge Bases
ChatOllama through commit 96c3ce5 contains an insecure direct object reference vulnerability that allows remote attackers to access other users' private knowledge bases by supplying sequential ids. Attackers can enumerate ids via GET /api/knowledgebases/{id} …
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Medium 6.5
HUIZHI ChargeOS cloud through 3.0.9 Unpaid Wallet Credit via /pay/xcxRecharge
HUIZHI ChargeOS cloud through 3.0.9 contains a missing authorization vulnerability in the hcp-mp PayController.xcxRecharge endpoint that allows attackers to modify any member's wallet balance without payment. Attackers can send requests with arbitrary amount …
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Medium 6.5
HUIZHI ChargeOS cloud through 3.0.9 IDOR via hcp-mp Member and Order APIs
HUIZHI ChargeOS cloud through 3.0.9 contains an insecure direct object reference vulnerability in the hcp-mp MeController and OrderController that trusts client-supplied userId, openId and orderNumber parameters. Attackers can enumerate sequential member ids …
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High 7.1
Shaiwz data-platform-open through commit efeacd3 IDOR in Datasource API
Shaiwz data-platform-open through commit efeacd3 contains an insecure direct object reference vulnerability that allows authenticated workspace members to access other workspaces' datasources by numeric id. Attackers can send foreign sequential ids to /dataso…
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Medium 4.3
XBoot through 3.3.4 Authorization Bypass via getByDepartmentId Endpoint
Exrick XBoot through 3.3.4 contains an authorization bypass vulnerability that allows authenticated users to read user records of any department by ignoring role data scope. Attackers can request GET /xboot/user/getByDepartmentId/{departmentId} with arbitrary…
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High 8.3
Magistrala through 1.0.0 Cross-Tenant Authorization Bypass in Certs Service
Magistrala through 1.0.0 contains an authorization bypass vulnerability that allows authenticated workspace members to view, issue, and revoke other tenants' device certificates by supplying foreign serials or entity ids. Attackers can call RevokeBySerial, Re…
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High 8.3
APIPark through 1.9.7-beta Cross-Team Authorization Bypass via Team Query Parameter
APIPark through 1.9.7-beta contains an authorization bypass vulnerability that allows authenticated team managers to access other teams' services and applications by supplying their own team id in the team query parameter. Attackers can target service or app …
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Medium 4.3
Faveo Helpdesk through 2.0.3 Broken Access Control via /ticket/tooltip Endpoint
Faveo Helpdesk through 2.0.3 contains a broken access control vulnerability that allows authenticated agents to read tickets in other departments via the getTooltip handler. Attackers can enumerate sequential ticketid values on GET /ticket/tooltip to read tic…
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Medium 4.3
Tbed through 20240319 Missing Authorization via setImgFileName Endpoint
Tbed through 20240319 contains a missing authorization vulnerability that allows any authenticated user to rename other users' images through the /admin/setImgFileName endpoint. Attackers can supply a victim's imgname, exposed in public image URLs and album l…