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Common Weakness Enumeration

CWE-639

Allowed

Authorization Bypass Through User-Controlled Key

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

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.

3999 vulnerabilities reference this CWE, most recent first.

CVE-2026-55518 (GCVE-0-2026-55518)

Vulnerability from cvelistv5 – Published: 2026-07-17 20:51 – Updated: 2026-07-20 15:20
VLAI
Title
Avo: Missing Authorization in Avo Association Attach Endpoint Allows Unauthorized Relationship Manipulation and Privilege Escalation
Summary
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to 3.32.1 and 4.0.0.beta.51, Avo's association attach workflow checks attach_<association>? in the UI and GET /resources/:resource/:id/:related/new path, but the actual write endpoint, POST /resources/:resource/:id/:related, does not run the same authorization check before mutating the association through Avo::AssociationsController#create. An authenticated low-privileged Avo user can bypass hidden or disabled attach controls and directly attach related records to a parent record by sending a crafted POST request, which can lead to privilege escalation and cross-tenant data exposure where associations represent authorization-bearing relationships. This issue is fixed in versions 3.32.1 and 4.0.0.beta.51.
Severity
9.6 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 15:18 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
avo-hq avo Affected: >= 4.0.0.beta.1, < 4.0.0.beta.51
Affected: < 3.32.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-55516 (GCVE-0-2026-55516)

Vulnerability from cvelistv5 – Published: 2026-07-10 18:31 – Updated: 2026-07-14 13:42
VLAI
Title
Snipe-IT: Cross-company asset maintenance re-parenting via API update
Summary
Snipe-IT is an IT asset/license management system. Prior to 8.6.2, PATCH or PUT /api/v1/maintenances/{maintenance_id} checks access to the current maintenance record and asset but then fills attacker-controlled fields including asset_id without re-authorizing the newly supplied asset, allowing an authorized user to move a maintenance record onto an asset outside their company scope. This issue is fixed in version 8.6.2.
Severity
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 13:41 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
grokability snipe-it Affected: < 8.6.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-55515 (GCVE-0-2026-55515)

Vulnerability from cvelistv5 – Published: 2026-07-10 19:36 – Updated: 2026-07-13 15:02
VLAI
Title
Snipe-IT: Cross-company deletion of pending checkout acceptances via unscoped report endpoint
Summary
Snipe-IT is an IT asset/license management system. Prior to 8.6.2, the unaccepted-assets report delete endpoint authorizes only reports.view and deletes CheckoutAcceptance::pending()->find($acceptanceId) by global ID without checking access to the related checkoutable asset, allowing a reports user in one company to delete pending checkout acceptance records for another company. This issue is fixed in version 8.6.2.
Severity
5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-13 15:01 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
grokability snipe-it Affected: < 8.6.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-55489 (GCVE-0-2026-55489)

Vulnerability from cvelistv5 – Published: 2026-08-20 21:36 – Updated: 2026-08-21 11:23
VLAI
Title
BigBlueButton: IDOR on BBB through /api/graphql via POST parameter "presentationId" leads to Authentication Bypass
Summary
BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton presenters could submit a presentationId through /api/graphql that identified a presentation belonging to another meeting. akka-bbb-apps/src/main/scala/org/bigbluebutton/core/apps/presentationpod/RemovePresentationPubMsgHdlr.scala did not verify the presentation's meeting identifier before deletion, allowing a presenter who knew the identifier to delete another meeting's presentation and disrupt its availability. This issue is fixed in version 3.0.29.
Severity
4.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 11:22 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Show details on NVD website
To clipboard 

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CVE-2026-55482 (GCVE-0-2026-55482)

Vulnerability from cvelistv5 – Published: 2026-08-19 18:18 – Updated: 2026-08-21 19:49
VLAI
Title
Snipe-IT: Multi-Tenancy Bypass via Bulk Asset Update
Summary
Snipe-IT is an IT asset/license management system. Prior to 8.4.1, a non-superadmin can use app/Http/Controllers/Assets/BulkAssetsController.php update() to submit company_id directly without Company::getIdForCurrentUser(), allowing assets to be moved across company boundaries and breaking multi-tenant isolation. This issue is fixed in version 8.4.1.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:48 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
grokability snipe-it Affected: < 8.4.1
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CVE-2026-55478 (GCVE-0-2026-55478)

Vulnerability from cvelistv5 – Published: 2026-07-10 18:34 – Updated: 2026-07-10 20:58
VLAI
Title
Snipe-IT: Missing object-level authorization in Kits API
Summary
Snipe-IT is an IT asset/license management system. Prior to 8.6.2, POST /api/v1/kits/{kit_id}/licenses checks whether the caller can edit kits but does not authorize access to the referenced license object, allowing a low-privilege user with predefined-kit permissions to bind a license they should not be able to access or manage into a kit. This issue is fixed in version 8.6.2.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-10 20:46 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
grokability snipe-it Affected: < 8.6.2
Create a notification for this product.
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CVE-2026-55429 (GCVE-0-2026-55429)

Vulnerability from cvelistv5 – Published: 2026-07-08 00:00 – Updated: 2026-07-08 14:41
VLAI
Title
Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID
Summary
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, `UpsertWorkspaceApp` overwrites an existing app's `agent_id` on a primary-key conflict and `insertAgentApp` accepts the app ID from the provisioner's `CompleteJob` payload without verifying it belongs to the workspace being built. `CompleteJob` runs under `dbauthz.AsProvisionerd` so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing `workspace_apps` row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available.
Severity
8.7 (High)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-08 14:41 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
coder coder Affected: >= 2.34.0, < 2.34.2
Affected: >= 2.33.0, < 2.33.8
Affected: >= 2.30.0, < 2.32.7
Affected: < 2.29.17
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Show details on NVD website
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CVE-2026-55418 (GCVE-0-2026-55418)

Vulnerability from cvelistv5 – Published: 2026-07-07 21:18 – Updated: 2026-07-09 14:42
VLAI
Title
FastGPT: S3 presign/read handlers do not bind the object key to the caller's team (cross-team file disclosure)
Summary
FastGPT is an open source AI knowledge base platform. Prior to v4.15.0-beta5, two FastGPT file handlers authorize an unrelated resource and then sign or read an S3 object using a key taken directly from the request, without checking that the key belongs to the caller's team. Because S3 object keys are global within the bucket and carry the tenant id only as a path segment, an attacker can supply another team's key and obtain its file contents through the chat-file presign endpoint or dataset preview endpoint. This issue is fixed in version v4.15.0-beta5.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 14:38 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
labring FastGPT Affected: < 4.15.0-beta5
Create a notification for this product.
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CVE-2026-55411 (GCVE-0-2026-55411)

Vulnerability from cvelistv5 – Published: 2026-06-25 16:08 – Updated: 2026-06-25 17:53
VLAI
Title
ToolJet: Cross-tenant credential decryption (IDOR) in POST /api/data-sources/decrypt — any authenticated user can decrypt any organization's data-source secrets
Summary
ToolJet is the open-source foundation am AI-native platform for building and deploying internal tools, workflows and AI agents. Prior to 3.20.1780-lts, the authenticated endpoint POST /api/data-sources/decrypt returns the decrypted plaintext for any credential whose credential_id is supplied in the request body. Unlike every neighbouring data-source route, this handler is not protected by ValidateDataSourceGuard, does not receive the calling @User(), and the underlying CredentialsService.getValue() looks the credential up by id only, with no organization scoping. As a result, any authenticated user of any organization can decrypt the data-source secrets of any other organization by supplying that organization's credential_id — a cross-tenant confidentiality breach. This vulnerability is fixed in 3.20.1780-lts.
Severity
6.8 (Medium)
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 17:53 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version
ToolJet ToolJet Affected: < 3.20.1780-lts
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-55255 (GCVE-0-2026-55255)

Vulnerability from cvelistv5 – Published: 2026-06-23 16:28 – Updated: 2026-07-08 03:56
VLAI
Title
Langflow: IDOR Vulnerability in `/api/v1/responses` Endpoint Allows Authenticated Attackers to Access Another User's Flow
Summary
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.1, an Insecure Direct Object Reference (IDOR) vulnerability in /api/v1/responses endpoint allows an authenticated attacker to execute any flow belonging to another user by specifying the victim's flow ID in the request. This vulnerability is fixed in 1.9.1.
Severity
8.4 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:L
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 00:00 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
langflow-ai langflow Affected: < 1.9.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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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.

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