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.

3973 vulnerabilities reference this CWE, most recent first.

CVE-2026-81299 (GCVE-0-2026-81299)

Vulnerability from cvelistv5 – Published: 2026-08-28 14:33 – Updated: 2026-08-28 16:06
VLAI
Title
WordPress WP Job Portal plugin <= 2.5.9 - Insecure Direct Object References (IDOR) vulnerability
Summary
Subscriber Insecure Direct Object References (IDOR) in WP Job Portal <= 2.5.9 versions.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 16:05 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
Ahmad WP Job Portal Affected: n/a , ≤ 2.5.9 (custom)
Create a notification for this product.
Show details on NVD website

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CVE-2026-81031 (GCVE-0-2026-81031)

Vulnerability from cvelistv5 – Published: 2026-08-26 15:44 – Updated: 2026-08-29 02:43
VLAI
Title
IDURAR ERP CRM through 4.1.1 Account Takeover via Unverified Identifier on Password Update
Summary
IDURAR ERP CRM changes the password of whichever account a request names rather than the account making the request. The update handler in backend/src/controllers/middlewaresControllers/createUserController/updatePassword.js resolves the authenticated user from the request that the token middleware populated, then issues its update against a filter built from the identifier in the URL path, and never compares the two. The route is mounted behind the administrator token check only, so any valid administrator session is sufficient, and the sole ownership-like guard in the handler rejects a single hardcoded demo address. A caller can therefore set an arbitrary password on any other administrator account and sign in as it. The read handler in the same controller directory accepts an identifier the same way, which supplies the identifiers needed to pick a target.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-29 02:42 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
idurar idurar-erp-crm Affected: 0 , ≤ 4.1.1 (semver)
    cpe:2.3:a:idurarapp:idurar:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-26 00:00
Show details on NVD website

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CVE-2026-80197 (GCVE-0-2026-80197)

Vulnerability from cvelistv5 – Published: 2026-08-25 23:19 – Updated: 2026-08-26 13:46
VLAI
Title
Kimai before 2.57.0 Improper Authorization via Favorite Endpoints
Summary
Kimai before 2.57.0 contains an improper authorization vulnerability in the favorite timesheet add and remove endpoints that allows authenticated users to manipulate other users' bookmarks. Attackers can add or remove timesheet entries from another user's favorite list by referencing their timesheet identifier, enabling cross-user business-state tampering without administrative privileges.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 13:45 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
kimai kimai Affected: 0 , < 2.57.0 (semver)
Unaffected: 2.57.0 (semver)
    cpe:2.3:a:kimai:kimai:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-05-29 00:00
Credits
Show details on NVD website

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CVE-2026-80049 (GCVE-0-2026-80049)

Vulnerability from cvelistv5 – Published: 2026-08-25 18:23 – Updated: 2026-08-25 19:15
VLAI
Title
Airbyte Platform through 2.0.0 Cross-Workspace Authorization Bypass via Caller-Supplied workspaceId
Summary
Airbyte Platform resolves the workspace used for its authorization decision from a field the caller supplies. AuthorizationServerHandler copies recognised identifiers out of the raw JSON request body into X-Airbyte-* headers, and AuthenticationHeaderResolver.resolveWorkspace consults X-Airbyte-Workspace-Id ahead of every resource-derived header, including those for connection, source and destination identifiers. Endpoints whose declared request bodies carry only a resource identifier are nonetheless reached with an added workspaceId field, because the extractor reads the body rather than the endpoint's schema, so the permission check is performed against the workspace the caller nominated while the handler acts on the resource identifier the caller supplied. Nothing afterwards compares the resource's owning workspace with the one that was authorized. A member of any workspace can therefore read source and destination configuration, trigger and cancel syncs, and delete connections, sources and destinations that belong to workspaces they have no access to, at whatever privilege level their own workspace membership grants them.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 19:14 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
airbytehq airbyte-platform Affected: 0 , ≤ 2.0.0 (semver)
Create a notification for this product.
Date Public
2026-08-25 00:00
Show details on NVD website

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CVE-2026-79990 (GCVE-0-2026-79990)

Vulnerability from cvelistv5 – Published: 2026-09-02 14:19 – Updated: 2026-09-02 17:53
VLAI
Title
GQL entry mutation `siteId` bypasses schema site scope, enabling cross-site content read/write/delete
Summary
Craft CMS GraphQL entry mutation resolvers (saveEntry, deleteEntry) read siteIddirectly from$argumentswithout passing throughArgumentManagerprepareArguments(), which is the function that enforces site-scope filtering via array_intersect against the GraphQL schema’s allowed sites. The query path (ElementResolverprepareElementQuery) correctly calls prepareArguments()`, so queries to unauthorized sites return empty. But mutations bypass this entirely — an attacker with a token scoped to Site A can create, modify, or delete entries in Site B by passing siteId in the mutations argument.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 17:52 UTC
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
References
Impacted products
Vendor Product Version
craftcms cms Affected: 5.0.0-RC1 , < 5.10.11 (semver)
    cpe:2.3:a:craftcms:cms:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-79750 (GCVE-0-2026-79750)

Vulnerability from cvelistv5 – Published: 2026-08-31 17:54 – Updated: 2026-09-02 14:03
VLAI
Title
MCPHub authenticated horizontal IDOR: any non-admin user executes tools on other users' MCP servers (cross-tenant file read + SSRF)
Summary
MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.30, MCPHub scopes non-admin users to servers they own (list views and config edits enforce ownership), but the tool-execution API does not. Any authenticated non-admin user can invoke tools on MCP servers owned by other users — servers they cannot even see in GET /api/servers. Because connected MCP servers carry real capability (filesystem, HTTP fetch, cloud APIs with the owner's keys), this is cross-tenant compromise: demonstrated arbitrary host file read (/etc/passwd, another user's secrets) and SSRF. This issue has been patched in version 1.0.30.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 14:02 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
samanhappy mcphub Affected: < 1.0.30
Create a notification for this product.
Show details on NVD website

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CVE-2026-79654 (GCVE-0-2026-79654)

Vulnerability from cvelistv5 – Published: 2026-08-26 05:37 – Updated: 2026-08-28 22:44
VLAI
Title
Ketello: katello content view history api cross-organization authorization bypass
Summary
A flaw was found in Katello where the Content View History API does not properly enforce authorization when accessing a Content View specified by the user. An authenticated user with permission to view Content Views in one organization may be able to access the lifecycle history of a Content View belonging to another organization by supplying its identifier to the affected API endpoint. This can result in unauthorized disclosure of Content View lifecycle information, including publication and promotion events, associated users, and timestamps.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 22:44 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
Red Hat Red Hat Satellite 6     cpe:/a:redhat:satellite:6
Create a notification for this product.
Date Public
2026-08-26 05:27
Show details on NVD website

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CVE-2026-78581 (GCVE-0-2026-78581)

Vulnerability from cvelistv5 – Published: 2026-08-25 13:08 – Updated: 2026-08-25 14:51
VLAI
Title
Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Data Modification in Kibana
Summary
Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized data modification via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). Under certain conditions, an authenticated user could reference another user's AI Assistant conversation identifier to access or modify a conversation they do not own. Successful exploitation requires knowledge of a hard-to-guess identifier.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-25 13:27 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
Elastic Kibana Affected: 8.0.0 , ≤ 8.16.2 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-78466 (GCVE-0-2026-78466)

Vulnerability from cvelistv5 – Published: 2026-08-25 05:31 – Updated: 2026-08-26 16:39
VLAI

** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: CVE-2026-78278. Reason: This candidate is a reservation duplicate of CVE-2026-78278. Notes: All CVE users should reference CVE-2026-78278 instead of this candidate. All references and descriptions in this candidate have been removed to prevent accidental usage.

Show details on NVD website

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CVE-2026-78365 (GCVE-0-2026-78365)

Vulnerability from cvelistv5 – Published: 2026-08-24 12:49 – Updated: 2026-08-24 13:01 X_Open Source
VLAI
Title
IDOR and missing authorization in Prospero Flow CRM supplier API allows cross-tenant read and modification
Summary
Authorization Bypass Through User-Controlled Key in the supplier API in Roskus Prospero Flow CRM 4.0.0 through 5.3.1 allows any authenticated user to read and modify another company's supplier record, and to reassign it to their own company, via a PUT request to /api/supplier/{id} setting company_id in the body.
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 12:58 UTC
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
  • CWE-862 - Missing Authorization
Impacted products
Vendor Product Version
Roskus Prospero Flow CRM Affected: 4.0.0 , < 5.3.2 (semver)
    cpe:2.3:a:roskus:prospero_flow_crm:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-24 11:52
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.