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Common Weakness Enumeration

CWE-639

Allowed

Authorization Bypass Through User-Controlled Key

Abstraction: Base · Status: Incomplete

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.

3977 vulnerabilities reference this CWE, most recent first.

CVE-2026-70561 (GCVE-0-2026-70561)

Vulnerability from cvelistv5 – Published: 2026-08-07 18:27 – Updated: 2026-08-14 16:51
VLAI
Title
TestLink 1.9.20 and prior Authenticated IDOR via attachmentdownload.php
Summary
TestLink 1.9.20 and prior contains an insecure direct object reference vulnerability that allows any authenticated user, including low-privilege guest accounts, to read arbitrary attachments by supplying an integer attachment ID to the attachmentdownload.php handler without any project or role authorization check. Attackers can enumerate sequential integer IDs through the attachment download endpoint to retrieve file contents from private projects they have no membership in, bypassing the per-project access control model and exposing test specifications, requirements documents, execution evidence, and other sensitive uploaded files across the entire installation.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-10 12:00 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
TestLinkOpenSourceTRMS TestLink Affected: 0 , ≤ 1.9.20 (semver)
    cpe:2.3:a:testlink:testlink:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-07 00:00
Show details on NVD website

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CVE-2026-70557 (GCVE-0-2026-70557)

Vulnerability from cvelistv5 – Published: 2026-08-06 19:16 – Updated: 2026-08-07 17:40
VLAI
Title
diboot-core Authenticated Arbitrary Field Read via loadRelatedData Discloses Password Hashes and Salts
Summary
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SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-07 17:39 UTC
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
References
Impacted products
Vendor Product Version
diboot diboot-core Affected: 0 , ≤ 3.9.0 (custom)
Create a notification for this product.
Date Public
2026-08-06 19:15
Show details on NVD website

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CVE-2026-70488 (GCVE-0-2026-70488)

Vulnerability from cvelistv5 – Published: 2026-08-04 20:35 – Updated: 2026-08-05 14:02
VLAI
Title
Open WebUI: Deletion of directories and file embeddings in other knowledge bases via sync cleanup
Summary
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request body without checking that those objects belonged to that knowledge base. A user with write access to one knowledge base could delete directories and remove file embeddings from another knowledge base, causing documents to drop out of retrieval results and breaking chat-with-file for targeted documents without disclosing contents. This issue is fixed in 0.11.0.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:02 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-863 - Incorrect Authorization
Impacted products
Vendor Product Version
open-webui open-webui Affected: >= 0.9.6, < 0.11.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-70476 (GCVE-0-2026-70476)

Vulnerability from cvelistv5 – Published: 2026-08-04 19:23 – Updated: 2026-08-05 14:51
VLAI
Title
Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation
Summary
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, several organization billing endpoints in packages/server/src/enterprise/routes/organization.route.ts and packages/server/src/enterprise/controllers/organization.controller.ts accept attacker-controlled Stripe subscriptionId values without verifying that the identifier belongs to the authenticated user's organization. An authenticated attacker can perform unauthorized Stripe subscription operations on other tenants, including changing subscription plans or modifying seat quantities, resulting in financial impact and service disruption. This issue is fixed in 3.1.3.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:51 UTC
CWE
  • CWE-284 - Improper Access Control
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
FlowiseAI Flowise Affected: < 3.1.2
Create a notification for this product.
Show details on NVD website

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CVE-2026-69558 (GCVE-0-2026-69558)

Vulnerability from cvelistv5 – Published: 2026-08-20 21:47 – Updated: 2026-09-02 18:25 Exclusively Hosted Service
VLAI
Title
Microsoft Partner Center Information Disclosure Vulnerability
Summary
Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 13:14 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
Microsoft Microsoft Partner Center Affected: -
    cpe:2.3:a:microsoft:partner_center:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-20 14:00
Show details on NVD website

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CVE-2026-69258 (GCVE-0-2026-69258)

Vulnerability from cvelistv5 – Published: 2026-08-04 15:56 – Updated: 2026-08-05 14:59
VLAI
Title
Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API
Summary
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the unauthenticated POST /api/v1/prediction/:id endpoint accepted an overrideConfig object and unconditionally spread it into internal flowConfig and flowData objects in packages/server/src/utils/buildChatflow.ts and packages/server/src/utils/index.ts without checking apiOverrideStatus. This allowed unauthenticated attackers to inject arbitrary properties into the flow execution context of any public chatflow, overwrite values such as chatId, sessionId, and chatHistory, and control values resolved through $flow.* template variables consumed by flow nodes. This issue is fixed in version 3.1.3.
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:56 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
Impacted products
Vendor Product Version
FlowiseAI Flowise Affected: < 3.1.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-69250 (GCVE-0-2026-69250)

Vulnerability from cvelistv5 – Published: 2026-08-04 14:20 – Updated: 2026-08-04 19:52
VLAI
Title
Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
Summary
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP request to the credential-controlled accessTokenUrl without SSRF protections. Runtime validation confirmed that the endpoint was reachable without authentication, triggered outbound POST requests to an attacker-controlled server, reflected the full remote response body to the caller through tokenInfo, and sent client_id, client_secret, grant_type=refresh_token, and refresh_token in the request body. This issue is fixed in version 3.1.3.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 19:32 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
FlowiseAI Flowise Affected: < 3.1.3
Create a notification for this product.
Show details on NVD website

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CVE-2026-69189 (GCVE-0-2026-69189)

Vulnerability from cvelistv5 – Published: 2026-08-18 15:05 – Updated: 2026-08-18 15:32
VLAI
Title
Hoppscotch: Cross-user private data exposure and UserHistory IDOR via team GraphQL resolvers
Summary
Hoppscotch is an open source API development ecosystem. Prior to 2026.6.0, the team, teamMembers.user, RESTHistory, GQLHistory, currentRESTSession, currentGQLSession, environments, globalEnvironments, and settings GraphQL paths expose another workspace member's private User data, while toggleHistoryStarStatus and removeRequestFromHistory in the UserHistory service accept another user's history identifier without enforcing userUid ownership, allowing an authenticated workspace member to read private request history, session data, request contents, authorization headers, environment values, and settings and to modify or delete the victim's private history entries. This issue is fixed in version 2026.6.0.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:32 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
Impacted products
Vendor Product Version
hoppscotch hoppscotch Affected: < 2026.6.0
Create a notification for this product.
Show details on NVD website

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CVE-2026-69160 (GCVE-0-2026-69160)

Vulnerability from cvelistv5 – Published: 2026-08-18 18:04 – Updated: 2026-08-18 18:47
VLAI
Title
OpenList: Arbitrary File Read via Path Prefix Confusion in Share Creation API
Summary
OpenList a file list program that supports multiple storage. Prior to 4.2.4, the share creation and update checks in server/handles/sharing.go use strings.HasPrefix(requested_path, user.BasePath) without enforcing a directory separator boundary. An authenticated user with CanShare permission and a BasePath such as /base can submit a sibling path such as /base2/secret.txt, create a share for the out-of-scope file, and use the public share download or list handlers to read data outside the assigned directory. This issue is fixed in version 4.2.4.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 18:47 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
OpenListTeam OpenList Affected: < 4.2.4
Create a notification for this product.
Show details on NVD website

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CVE-2026-69129 (GCVE-0-2026-69129)

Vulnerability from cvelistv5 – Published: 2026-08-26 22:04 – Updated: 2026-08-27 14:32
VLAI
Title
KubePi: Insufficient per-cluster authorization checks in cluster management APIs
Summary
KubePi is a Kubernetes multi-cluster management panel. In versions up to and including 2.0.0, cluster-scoped APIs do not consistently validate per-cluster access, allowing an authenticated user with cluster management permissions to operate on clusters outside the scope they were granted. Because the affected endpoints act on cluster-specific data without confirming that the requesting user is authorized for that particular cluster, a user assigned management rights over one cluster can, under certain role and cluster configurations, read or modify data in clusters they should not manage. This issue is fixed in version 2.0.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 13:53 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
1Panel-dev KubePi Affected: < 2.0.1
Create a notification for this product.
Show details on NVD website

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Mitigation
Architecture and Design

For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.

Mitigation
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.

Mitigation
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.

No CAPEC attack patterns related to this CWE.