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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Critical 9.8CVE-2026-88877 Public exploit
Traefik v3.7.0 Authentication Bypass via from-to-www-redirect
Traefik is a HTTP reverse proxy and load balancer. In versions >= v3.7.0 and <= v3.7.11, the Kubernetes ingress-nginx provider mishandles Ingresses that carry both an authentication annotation and the nginx.ingress.kubernetes.io/from-to-www-redirect annotatio…
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High 8.1
AVideo Missing Authorization via getRestream.json.php
AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate restream ownership in getRestream.json.php, allowing authenticated users with canStream permission to mint tokens for arbitrary restreams. Attackers can exchange the token to ret…
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High 8.1
Apache Camel K: Camel K Builder trait mavenProfiles ValueSources resolve tenant-named secrets in operator namespace
Authorization bypass through User-Controlled key vulnerability in Apache Camel K. An authorization vulnerability in custom resource resolution allows a tenant to reference secrets by name in the operator namespace, potentially exposing secrets belonging to ot…
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Medium 4.3
An authorization bypass vulnerability exists in SHIRASAGI through a user-controlled key, which may allow an unauthorize…
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Medium 4.3
BurgerEditor 3.0.0 through 3.4.0 contains an issue with authorization bypass through user-controlled key. If this vulne…
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Medium 4.3
Open WebUI: Any authenticated user can inject chats into another user's folder via chat completions
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/chat/completions and POST /api/v1/chat/completions in backend/open_webui/main.py copied a client-supplied folder_id into a new chat witho…
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Medium 4.3
Open WebUI: Channel members can overwrite another member's message via the chat completions endpoint
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 until 0.11.1, the channel branch of chat_completion in backend/open_webui/main.py checked channel write access and channel membership for a supplied message_id bu…
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Critical 9.3
MantisBT: SOAP API Authentication Bypass with Privilege Escalation to Administrator
MantisBT is an open source bug tracker. Versions 2.28.3 and earlier contain a critical authentication bypass in the SOAP API's mci_check_login() function. Any user knowing any valid cookie_string can authenticate as any other user (knowing their username), in…
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Critical 9.0
Cash Collect contains an improper authorization vulnerability in the Sage AR Automation API. Insufficient tenant-level …
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Low 3.5
snipe-it 7.0.12 through 8.6.3 Authorization Bypass via Importer
Snipe-IT versions >= 7.0.12 and <= 8.6.3 contain an authorization bypass in the Livewire importer component (App\Livewire\Importer, mounted at the imports.index route). The component only checked the broad 'import' ability at mount time, while its files() and…
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Medium 4.3
snipe-it 8.6.3 before 8.7.0 Authorization Bypass via print endpoints
snipe-it versions before 8.7.0 contain an authorization bypass vulnerability in location print endpoints that fails to enforce per-model authorization checks. Authenticated attackers with location view permission can access printassigned and printallassigned …
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Medium 5.0
Snipe-IT before 8.7.0 Authorization Bypass via Asset Acceptance Report
Snipe-IT versions before 8.7.0 fail to properly scope asset acceptance report queries by company, allowing authenticated reports.view users to read pending acceptances across all companies. Attackers can access the unaccepted_assets report page or CSV export …
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Medium 6.5
Siyuan before v3.8.2 Information Disclosure via Export Preview
Siyuan before v3.8.2 fails to apply publish-access filtering to embedded blocks before rendering in the /api/export/preview and /api/lute/copyStdMarkdown endpoints. Attackers with reader access can retrieve the full rendered content of private, hidden, or pub…
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Medium 5.3
Sunshine Photo Cart < 3.7 - Unauthenticated Price Manipulation via IDOR
The Sunshine Photo Cart WordPress plugin before 3.7 does not validate that a client-supplied price identifier belongs to the item being purchased when it is added to the cart, allowing unauthenticated users to buy items at a lower price defined elsewhere on t…
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Low 3.7
WP Travel < 12.0.2 - Unauthenticated Booking Payment State Tampering via IDOR
The WP Travel WordPress plugin before 12.0.2 does not properly verify that the requester owns the booking targeted by its bank-deposit slip submission, allowing an unauthenticated attacker who knows the target customer's email address to change that customer'…
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Medium 5.4
Tanium addressed an improper access controls vulnerability in Comply.
Tanium addressed an improper access controls vulnerability in Comply.
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Medium 5.4
Tanium addressed an improper access controls vulnerability in Comply.
Tanium addressed an improper access controls vulnerability in Comply.
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Medium 6.3
Tanium addressed an improper access controls vulnerability in Comply.
Tanium addressed an improper access controls vulnerability in Comply.
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Medium 4.3
Tanium addressed an improper access controls vulnerability in Comply.
Tanium addressed an improper access controls vulnerability in Comply.
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High 7.5
Missing authorization in the Address Delete controller in Mageplaza GDPR for Magento 2 (mageplaza/module-gdpr) through …
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Medium 6.3
Sylius: IDOR on Shop Payment Request API endpoints
Sylius is an Open Source eCommerce Framework on Symfony. Starting in version 2.0.0 and prior to version 2.0.18, 2.1.15, and 2.2.6, the `GET /api/v2/shop/payment-requests/{hash}` and `PUT /api/v2/shop/payment-requests/{hash}` endpoints look up the payment requ…
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High 7.4
IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities
IBM Enterprise Build of Quarkus 3.27.1 through 3.27.5, and 3.33.1 through 3.33.3 could allow an attacker to bypass authorization by manipulating URL query parameters due to incorrect mapping of values to untrusted query string input.
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High 8.8
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 over a network.
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Medium 6.5
Microsoft Exchange Server Tampering Vulnerability
Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.
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Critical 9.1
Bifrost Unauthorized Channel Commission Attribution Allows Commission Diversion
The `vtoken-minting` and `slpx` pallets in Bifrost contain an improper authorization vulnerability in channel commission attribution. A signed account can supply an arbitrary registered `channel_id` when minting tokens without verifying that the caller is aut…
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High 7.1
AVideo SocialMediaPublisher Missing Authorization via add.json.php
AVideo through c3edcc274c389816d434acadac07ee78eaf330c1 contains a missing authorization vulnerability in the SocialMediaPublisher plugin's add.json.php endpoint that allows authenticated users to modify other users' OAuth token records. Attackers can supply …
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High 8.1
WWBN AVideo Missing Authorization via resendRestreamer.json.php
WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 fails to validate ownership of live_restreams_id in resendRestreamer.json.php, allowing authenticated users with canStream to access other users' restream destinations. Attackers can broadcas…
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Medium 6.1CVE-2026-73320 Public exploit
XenForo < 2.3.13 Unauthenticated Information Disclosure via Unfurl Endpoint
XenForo before 2.3.13 contains an unauthenticated information disclosure vulnerability that allows unauthenticated attackers to retrieve private unfurl records by supplying predictable auto-increment primary key IDs to the unfurl endpoint. Attackers can enume…
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Medium 6.5
WordPress WpEvently plugin <= 5.6.0 - Insecure Direct Object References (IDOR) vulnerability
Unauthenticated Insecure Direct Object References (IDOR) in WpEvently <= 5.6.0 versions.
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Medium 6.5
In JetBrains YouTrack before 2026.2.18634 an IDOR in the user profile API disclosed private issues and starred folders …
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Medium 6.5
In JetBrains YouTrack before 2026.2.18634 iDOR via the watchRules and issueListConfig endpoints exposed private saved s…
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Medium 4.3
In JetBrains YouTrack before 2026.2.18634 signed URL reuse allowed disclosure of restricted project icons
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Medium 5.3
MISP Event Graph Object Reference Lookup Exposes References from Unauthorized Objects
Affected versions of MISP allow authenticated users to retrieve object-reference records by UUID through EventGraphTool::get_reference_data() without first checking whether the requester is authorized to view the object the reference belongs to. The vulnerabl…
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Medium 5.3
Otter Blocks <= 3.1.7 - Missing Authorization to Unauthenticated Purchase Verification Bypass
The Otter Blocks – Gutenberg Blocks, Page Builder for Gutenberg Editor & FSE plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 3.1.7 via the 'watch_checkout' function due to missing validation on a us…
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High 7.1
MISP Missing Authorization in Cryptographic Key View Exposes Signing Keys from Protected Events
Affected versions of MISP do not enforce parent-event visibility when serving cryptographic keys through CryptographicKeysController::view(). The vulnerable handler queried CryptographicKey directly using the supplied key ID and selected sensitive fields such…
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High 7.3
SourceCodester Syllabus-Aligned Learning Management & Examination System delete_exam.php authorization
A vulnerability has been found in SourceCodester Syllabus-Aligned Learning Management & Examination System 1.0. Impacted is an unknown function of the file delete_exam.php. The manipulation of the argument ID leads to authorization bypass. The attack is possi…
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High 7.3
sfturing hosp_order Order Cancellation OrderController.java orderRecordsService.cancelOrder authorization
A vulnerability was detected in sfturing hosp_order up to 627f426331da8086ce8fff2017d65b1ddef384f8. This impacts the function orderRecordsService.cancelOrder of the file ssm_pro/src/main/java/cn/sfturing/web/OrderController.java of the component Order Cancell…
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High 7.3
sfturing hosp_order Order OrderController.java updateOrderdiseaseInfo authorization
A security vulnerability has been detected in sfturing hosp_order up to 627f426331da8086ce8fff2017d65b1ddef384f8. This affects the function updateOrderSta1/updateOrderdiseaseInfo of the file ssm_pro/src/main/java/cn/sfturing/web/OrderController.java of the co…
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High 7.3
sfturing hosp_order Order Controller OrderController.java authorization
A weakness has been identified in sfturing hosp_order up to 627f426331da8086ce8fff2017d65b1ddef384f8. The impacted element is an unknown function of the file ssm_pro/src/main/java/cn/sfturing/web/OrderController.java of the component Order Controller. Executi…
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Medium 5.3
diem-project diem dmWidget BasedmWidgetActions.class.php authorization
A vulnerability was identified in diem-project diem up to 5.1.3. This vulnerability affects unknown code of the file dmFrontPlugin/modules/dmWidget/lib/BasedmWidgetActions.class.php of the component dmWidget. Such manipulation of the argument widget_id leads …