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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High 7.1
DataEase: Token with Overly Broad Privileges in Share Mode: Access to Unshared Datasets
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High 8.7
DataEase ExportCenter IDOR allows cross-user export task access
DataEase is an open source data visualization and analysis tool. Prior to 2.10.24, any authenticated user can download (/exportCenter/download/{id}), delete (/exportCenter/delete), retry (/exportCenter/retry/{id}), or generate download links (/exportCenter/ge…
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Medium 6.5
Apache Airflow: Per-DAG read bypass discloses co-located DAGs' source via GET /api/v2/dagSources/{dag_id}
Before apache-airflow 3.3.0, a user authorized to read one Dag could disclose the source of other Dags co-located in the same source file. `GET /api/v2/dagSources/{dag_id}` — and the equivalent Dag-source view in the UI — returned the entire source file witho…
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High 7.5
IDOR in Idvlabs' Ontime
Authorization bypass through User-Controlled key vulnerability in Idvlabs Software and Consulting Services Inc. Ontime allows Exploitation of Trusted Identifiers. This issue affects Ontime: through 04052026.
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High 7.5
IDOR in Idvlabs' Ontime
Authorization bypass through User-Controlled key vulnerability in Idvlabs Software and Consulting Services Inc. Ontime allows Exploitation of Trusted Identifiers. This issue affects Ontime: through 04052026.
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Medium 5.3
Broken object-level access control on the Template API in MicroRealEstate allows attackers to retrieve document templat…
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High 7.1
Broken object-level access controls and the use of a deterministic pattern during random ID generation in MicroRealEsta…
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High 7.1
MicroRealEstate is affected by broken object-level access controls in PDF generator functionality. This issue affects M…
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Critical 9.9
Cross-Tenant Resource Cloning via Broken Object-Level Authorization in cloneTo()
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.464, the cloneTo() Livewire action in ResourceOperations.php authorizes the source resource but resolves destination resources with unscope…
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High 7.7
Coolify: Cross-team IDOR in logs component (resource lookup not team-scoped)
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.466, the Logs::mount() component looks up resources by UUID without scoping the lookup to the current team, allowing an authenticated user …
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High 8.6
FOSSBilling's missing order-state validation allows clients to read and reset API key secrets for non-active orders
FOSSBilling is a free, open-source billing and client management system. Versions 0.5.3 through 0.7.2 allow authenticated clients to both read and reset API key service secrets for orders that are no longer in an `active` state (e.g., `suspended`, `canceled`)…
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High 8.7
FOSSBilling allows low-privileged staff accounts to perform unauthorized actions via admin API endpoints
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Medium 5.0
Coolify: Cross-tenant activity log disclosure via unlocked Livewire property in ActivityMonitor
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.471, the ActivityMonitor Livewire component exposes a public $activityId property without Livewire's #[Locked] attribute. It loads activiti…
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High 8.1
Leantime - JSON-RPC API Broken Access Control via users.getUser
Leantime's Users::getUser method in the JSON-RPC API lacks proper authorization checks, allowing authenticated users to retrieve full user credential rows including password hashes, TOTP secrets, and session tokens. Attackers can exploit this by calling users…
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Critical 9.3
Incorrect authorisation in Adiss’s Biloop
An authenticated user could manipulate a company ID parameter in a POST request to the backend to gain unauthorised access to other companies hosted within the same subdomain environment. The application does not adequately verify whether the requested compan…
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Medium 5.3CVE-2026-49099 Public exploit
Apache Camel Salesforce: Non-Camel-prefixed Exchange header constants bypass the HTTP header filter, allowing an HTTP client to influence internal behaviour
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), Authorization Bypass Through User-Controlled Key vulnerability in Apache Camel Salesforce Component. The camel-salesforce producer resolves its operation param…
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Medium 5.3CVE-2026-48206 Public exploit
Apache Camel JIRA: A set of non-Camel-prefixed Exchange header constants bypass the HTTP header filter, allowing an HTTP client to drive arbitrary JIRA issue operations using the endpoint's configured credentials
Improper Input Validation, Authorization Bypass Through User-Controlled Key vulnerability in Apache Camel JIRA component. The camel-jira producers read their operation parameters - the issue key, project key, transition id, summary, type, assignee, components…
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High 7.5CVE-2026-46585 Public exploit
Apache Camel Lucene: The query control headers used non-Camel-prefixed names (QUERY, RETURN_LUCENE_DOCS) that bypass the HTTP header filter, allowing an HTTP client to inject the full-text search query
Improper Input Validation, Authorization Bypass Through User-Controlled Key vulnerability in Apache Camel Lucene Component. The camel-lucene producer reads the search phrase from an Exchange header (LuceneConstants.HEADER_QUERY) whose value was the plain stri…
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Medium 5.3CVE-2026-46453 Public exploit
Apache Camel: Camel-Elasticsearch-Rest-Client: Exchange header constants without the Camel prefix bypass inbound HTTP header filtering, allowing untrusted clients to override the Elasticsearch query and operation
Improper Input Validation, Authorization Bypass Through User-Controlled Key vulnerability in Apache Camel ElasticSearch Rest Client. The camel-elasticsearch-rest-client component reads several Exchange headers to control its behaviour - SEARCH_QUERY (an advan…
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Medium 4.3
Craft CMS reorder-sets Endpoint GlobalsController.php actionReorderSets authorization
A vulnerability was detected in Craft CMS up to 4.18.0.1. Affected is the function actionReorderSets of the file src/controllers/GlobalsController.php of the component reorder-sets Endpoint. The manipulation results in authorization bypass. The attack can be …
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High 7.3
mjperpinosa stumasy Note Handler/Assignment notes authorization
A vulnerability was detected in mjperpinosa stumasy up to 327d1b0f2915ba79d7ef8ebb74553e987609d9be. This impacts an unknown function of the file /PHP/objects/notes of the component Note Handler/Assignment Handler. Performing a manipulation of the argument ass…
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High 7.1
Gitea LFS object reuse bypasses Code-unit authorization
Gitea versions up to and including 1.26.2 allow Git LFS object reuse to authorize private source objects for users who have repository access but lack Code-unit access.
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High 7.5
Gitea email settings allow changing another user's primary email address
Gitea versions before 1.25.5 allow a user to change another user's primary email address.
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Medium 5.3
Gitea tracked-time deletion can target entries from another issue
Gitea versions before 1.25.5 look up tracked-time entries by time ID without scoping the lookup to the issue in the request URL, allowing deletion attempts to target entries from another issue.
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Medium 4.3
SourceCodester CET Automated Grading System with AI Predictive Analytics POST index.php view_student authorization
A security vulnerability has been detected in SourceCodester CET Automated Grading System with AI Predictive Analytics 1.0. This vulnerability affects unknown code of the file /index.php?action=view_student of the component POST Handler. The manipulation of t…
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Medium 5.4
Keycloak-services: keycloak-services: fgap v2 client scope assignment bypass via clientresource
A flaw was found in the ClientResource component of Keycloak's admin services when Fine-Grained Admin Permissions (FGAP) v2 is enabled. This issue allows a delegated administrator, who should only have limited control over specific clients, to attach or remov…
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Medium 6.9
Authorization Bypass Through User-Controlled Key in Prospero Flow CRM calendar event deletion
Authorization Bypass Through User-Controlled Key (CWE-639) in CalendarDeleteEventController (app/Http/Controllers/Calendar/CalendarDeleteEventController.php), exposed at GET /calendar/event/delete/{id}, in Prospero Flow CRM before 5.5.3 allows a remote, authe…
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Medium 4.3
Ad Inserter <= 2.8.16 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Post Content Disclosure via 'data' Shortcode Attribute
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 2.8.16 via the 'data' attribute of the [adinserter] shortcode. This is due to the replace_ai_tags() function proc…
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Medium 5.3
MotoPress Appointment Booking <= 2.4.4 - Unauthenticated Insecure Direct Object Reference to 'payment_details.booking_id' Parameter
The MotoPress Appointment Booking plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to, and including, 2.4.4. This is due to the `POST /motopress/appointment/v1/bookings` REST endpoint being registered w…
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Medium 5.0
LobeChat 2.2.9 - Broken Object Level Authorization via Chat-Group Agent Operations
LobeChat through 2.2.9 contains a broken object level authorization vulnerability that allows authenticated attackers to access and modify other users' chat-group agent data by supplying arbitrary group identifiers. Attackers can invoke the getGroupAgents, up…
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Medium 6.5
LobeChat 2.2.9 - Cross-User Document Disclosure via Unscoped RAG Semantic Search
LobeChat through 2.2.9 contains a broken access control vulnerability in the retrieval-augmented-generation semantic search functionality that allows authenticated attackers to access other users' data by exploiting missing user-identifier predicates in the c…
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Medium 5.9
LobeChat 2.2.9 - Broken Object-Level Authorization in Message Sub-Resource Writes
LobeChat through 2.2.9 server-database deployments are vulnerable to broken object-level authorization in MessageModel. The updateMessagePlugin, updatePluginState, updatePluginError, updateTTS and updateTranslate methods filter target rows by message id alone…
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High —
Grackle: Fail-open authorization in the MCP tool layer lets scoped agents perform cross-task and cross-session mutations (IDOR)
## Summary Authorization for scoped (agent) MCP callers is enforced **inline, per tool**, and is applied inconsistently — several mutating tools silently omit the ancestry/workspace check that their siblings perform. Because the MCP server authenticates all o…
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Medium 4.3
PraisonAI - Authorization Bypass via Unvalidated project_id in Issue Create/Update
PraisonAI before 0.1.7 fails to validate that project_id in issue create and update request bodies belongs to the URL workspace. An attacker can create issues referencing projects from other workspaces, causing cross-tenant data pollution in project statistic…
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Medium 6.5
WordPress Kirki plugin <= 6.0.11 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in Kirki <= 6.0.11 versions.
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Medium 5.3
My Calendar <= 3.7.14 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter
The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.7.14 via the 'vcal' parameter due to missing validation on a user controlled key. This makes it possible …
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Medium 5.3
LatePoint <= 5.6.2 - Unauthenticated Insecure Direct Object Reference to Arbitrary Creation via 'service_id' Parameter
The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.6.2 via the 'service_id' parameter due to missing validation on a user controlle…
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Medium 5.3
Appointment Bookings for Zoom GoogleMeet and more – Wappointment <= 2.7.6 - Unauthenticated Insecure Direct Object Reference via Predictable 'edit_key' / 'appointmentkey' Parameter
The Appointment Bookings for Zoom GoogleMeet and more – Wappointment plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to and including 2.7.6 via the `appointmentkey` parameter due to the appointment `edit_key` — the so…
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Medium 5.3
Academy LMS <= 3.8.1 - Unauthenticated Insecure Direct Object Reference to Private Topic Disclosure
The Academy LMS – WordPress LMS Plugin for Complete eLearning Solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 3.8.1. This is due to the '/topics' REST API endpoint being registered with a permi…
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Medium 5.3
Craft CMS: Unauthorized Deletion of Source Assets During File Replacement
Craft CMS is a content management system (CMS). Versions 5.0.0-RC1 through 5.9.20, and 4.0.0-RC1 through 4.17.13 contain an authorization issue in the AssetsController::actionReplaceFile that can delete a source asset without source delete permission by suppl…