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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.

4013 vulnerabilities reference this CWE, most recent first.

CVE-2026-42205 (GCVE-0-2026-42205)

Vulnerability from cvelistv5 – Published: 2026-05-08 21:26 – Updated: 2026-05-12 18:31
VLAI
Title
Avo: Broken Access Control: Unauthorized Execution of Arbitrary Action Classes Across Resources
Summary
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class (descendants of Avo::BaseAction) on any resource, even if the action is not registered for that specific resource. This leads to Privilege Escalation and unauthorized data manipulation across the entire application. This issue has been patched in version 3.31.2.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-12 12:51 UTC
CWE
  • CWE-284 - Improper Access Control
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
avo-hq avo Affected: < 3.31.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42097 (GCVE-0-2026-42097)

Vulnerability from cvelistv5 – Published: 2026-05-19 12:59 – Updated: 2026-05-19 15:28
VLAI
Title
Authentication Bypass in Sparx Pro Cloud Server
Summary
Sparx Pro Cloud Server requires authentication based on requested URL. An attacker can omit the "model" query parameter and send the model name only in the binary blob in POST request allowing SQL query execution without authentication. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 15:28 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
Sparx Systems Pro Cloud Server Affected: 0 , ≤ 6.1 (semver)
Create a notification for this product.
Credits
Blazej Adamczyk (br0x) - Efigo
Show details on NVD website
To clipboard 

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CVE-2026-41950 (GCVE-0-2026-41950)

Vulnerability from cvelistv5 – Published: 2026-05-05 20:35 – Updated: 2026-07-14 20:01 X_Open Source
VLAI
Title
Dify < 1.14.0 Authorization Bypass via File UUID
Summary
Dify before version 1.14.0 contains an authorization bypass vulnerability that allows authenticated users to read the full contents of files uploaded by other users within the same tenant by supplying an arbitrary file UUID in the files array of a chat-messages request. Attackers can exploit insufficient permission verification in the chat-messages endpoints to access files without ownership validation, bypassing workspace separation and signed URL protections to retrieve sensitive file contents through workflow processing.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-06 12:52 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
langgenius dify Affected: 0 , < 1.14.0 (semver)
    cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2026-03-30 00:00
Credits
Ido Shani and Gal Zaban of Zafran Security
Show details on NVD website
To clipboard 

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CVE-2026-41949 (GCVE-0-2026-41949)

Vulnerability from cvelistv5 – Published: 2026-05-18 13:52 – Updated: 2026-07-14 20:01 X_Open Source
VLAI
Title
Dify < 1.14.2 Authorization Bypass via File Preview Endpoint
Summary
Dify before version 1.14.2 contains an authorization bypass vulnerability in the file preview endpoint that allows any authenticated user to read up to 3,000 characters of any uploaded document across all tenants and workspaces using only the file's UUID. Attackers can access the /console/api/files/{file_id}/preview endpoint with an intercepted file UUID to extract sensitive content from documents without ownership or workspace permission verification. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-19 16:21 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
langgenius dify Affected: 0 , < 1.14.2 (semver)
    cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2026-03-30 00:00
Credits
Ido Shani and Gal Zaban of Zafran Security
Show details on NVD website
To clipboard 

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CVE-2026-41947 (GCVE-0-2026-41947)

Vulnerability from cvelistv5 – Published: 2026-05-18 13:48 – Updated: 2026-07-14 20:01 X_Open Source
VLAI
Title
Dify < 1.14.2 Authorization Bypass via Trace Configuration Endpoints
Summary
Dify before version 1.14.2 contains an authorization bypass vulnerability that allows authenticated editor users to set and enable trace configurations for any application regardless of tenant ownership. Attackers can exploit missing tenant ownership checks in the trace configuration endpoints to redirect all messages and responses from victim applications to attacker-controlled LLM trace providers. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-02 13:16 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
langgenius dify Affected: 0 , < 1.14.2 (semver)
    cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2026-03-30 00:00
Credits
Ido Shani and Gal Zaban of Zafran Security
Show details on NVD website
To clipboard 

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CVE-2026-41906 (GCVE-0-2026-41906)

Vulnerability from cvelistv5 – Published: 2026-05-07 18:09 – Updated: 2026-05-08 14:19
VLAI
Title
FreeScout: Conversation Change-Customer Cross-Mailbox Authorization Bypass
Summary
FreeScout is a free help desk and shared inbox built with PHP's Laravel framework. Prior to version 1.8.214, the Change Customer modal correctly hides out-of-scope customers through the mailbox-filtered search endpoint, but the backend conversation_change_customer action accepts any supplied customer_email. A low-privileged agent can forge a request and bind a visible conversation to a hidden customer in another mailbox. This issue has been patched in version 1.8.214.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-08 14:19 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-2026-41878 (GCVE-0-2026-41878)

Vulnerability from cvelistv5 – Published: 2026-07-10 09:05 – Updated: 2026-07-10 10:23
VLAI
Title
Insecure Direct Object Reference in R-SOFT DMS
Summary
R-SOFT DMS is vulnerable to Insecure Direct Object Reference (IDOR) attack in multiple file download endpoints. The application fetches files from the database by ID and serves them to whoever requests them, relying only on session authentication, meaning any valid user can access any file. This issue was fixed in version v3.19-2862 and v3.17-2580.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/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 10:22 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
URL Tags
https://cert.pl/posts/2026/07/CVE-2026-41876 third-party-advisory
Impacted products
Vendor Product Version
R-SOFT SERWIS DMS Affected: 0 , < v3.19-2862 (custom)
Affected: 0 , < v3.17-2580 (custom)
Create a notification for this product.
Credits
Marek Figielski (Vanilla.pl)
Show details on NVD website
To clipboard 

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CVE-2026-41649 (GCVE-0-2026-41649)

Vulnerability from cvelistv5 – Published: 2026-04-28 20:11 – Updated: 2026-04-29 13:12
VLAI
Title
Outline has IDOR in document share creation that allows unauthorized access to private documents across workspaces
Summary
Outline is a service that allows for collaborative documentation. The `shares.create` API endpoint starting in version 0.86.0 and prior to version 1.7.0 has an insecure direct object reference.. When both `collectionId` and `documentId` are provided in the request, the authorization logic only checks access to the collection, completely ignoring the document. This allows an authenticated attacker to generate a valid public share link for any document on the platform, including documents belonging to other workspaces. The full document contents can then be retrieved via the `documents.info` endpoint. Version 1.7.0 contains a patch.
Severity
7.7 (High)
CVSS:3.1/AV:N/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 2026-04-29 13:11 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
outline outline Affected: >= 0.86.0, < 1.7.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41471 (GCVE-0-2026-41471)

Vulnerability from cvelistv5 – Published: 2026-05-04 17:40 – Updated: 2026-05-26 11:52 X_Open Source
VLAI
Title
Easy PayPal Events & Tickets < 1.4 Information Disclosure via QR Code Endpoint
Summary
The Easy PayPal Events & Tickets plugin for WordPress before version 1.4 contains an information disclosure vulnerability in the QR code scanning endpoint that allows unauthenticated attackers to enumerate and retrieve all customer order records. Attackers can iterate over sequential WordPress post IDs through the scan_qr.php endpoint to harvest the complete set of orders stored in the database without requiring authentication or prior knowledge of specific order identifiers.
Severity
8.2 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-04 18:24 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
Scott Paterson easy-paypal-events-tickets Affected: 0 , < 1.4.0 (semver)
Create a notification for this product.
Date Public
2026-05-01 00:00
Credits
4lec4st
Show details on NVD website
To clipboard 

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CVE-2026-41406 (GCVE-0-2026-41406)

Vulnerability from cvelistv5 – Published: 2026-04-28 18:10 – Updated: 2026-04-29 12:52 X_Open Source
VLAI
Title
OpenClaw < 2026.3.31 - Sender Allowlist Bypass via Thread History and Quoted Messages
Summary
OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.
Severity
2.3 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-29 12:52 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
OpenClaw OpenClaw Affected: 0 , < 2026.3.31 (semver)
Unaffected: 2026.3.31 (semver)
    cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Create a notification for this product.
Date Public
2026-03-31 00:00
Credits
AntAISecurityLab
Show details on NVD website
To clipboard 

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    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-41406",
    "datePublished": "2026-04-28T18:10:04.063Z",
    "dateReserved": "2026-04-20T14:15:22.223Z",
    "dateUpdated": "2026-04-29T12:52:32.670Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
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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