Common Weakness Enumeration

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.

CVE-2026-39526 (GCVE-0-2026-39526)

Vulnerability from cvelistv5 – Published: 2026-04-08 08:30 – Updated: 2026-04-29 09:52
VLAI
Title
WordPress WpStream plugin < 4.11.2 - Insecure Direct Object References (IDOR) vulnerability
Summary
Authorization Bypass Through User-Controlled Key vulnerability in wpstream WpStream wpstream allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WpStream: from n/a through < 4.11.2.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
wpstream WpStream Affected: 0 , ≤ 4.11.2 (custom)
Create a notification for this product.
Date Public
2026-04-08 10:29
Credits
Muhammad Sharief | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-39616 (GCVE-0-2026-39616)

Vulnerability from cvelistv5 – Published: 2026-04-08 08:30 – Updated: 2026-04-29 09:52
VLAI
Title
WordPress Download Attachments plugin <= 1.4.0 - Insecure Direct Object References (IDOR) vulnerability
Summary
Authorization Bypass Through User-Controlled Key vulnerability in dFactory Download Attachments download-attachments allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Download Attachments: from n/a through <= 1.4.0.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
dFactory Download Attachments Affected: 0 , ≤ 1.4.0 (custom)
Create a notification for this product.
Date Public
2026-04-08 10:28
Credits
Jakub Herman | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-39942 (GCVE-0-2026-39942)

Vulnerability from cvelistv5 – Published: 2026-04-09 16:07 – Updated: 2026-04-09 19:37
VLAI
Title
Directus has a Path Traversal and Broken Access Control in File Management API
Summary
Directus is a real-time API and App dashboard for managing SQL database content. Prior to 11.17.0, the PATCH /files/{id} endpoint accepts a user-controlled filename_disk parameter. By setting this value to match the storage path of another user's file, an attacker can overwrite that file's content while manipulating metadata fields such as uploaded_by to obscure the tampering. This vulnerability is fixed in 11.17.0.
Severity
8.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-284 - Improper Access Control
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
directus directus Affected: < 11.17.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-39967 (GCVE-0-2026-39967)

Vulnerability from cvelistv5 – Published: 2026-05-22 18:36 – Updated: 2026-05-26 19:05
VLAI
Title
TypeBot: Cross-Typebot Result Data Access via Missing typebotId Filter
Summary
TypeBot is a chatbot builder tool. In versions 3.15.2 and prior, the bot engine's the findResult query does not filter results by typebotId, allowing an authenticated user to load result data (user answers, variable values) from a different typebot by supplying a foreign resultId to the startChat endpoint. Exploitation is constrained by CUID2's cryptographically random 24-character IDs (making brute-force infeasible), the requirement that rememberUser be enabled, and the need for matching variable names in the current typebot. If successfully exploited, an attacker can access the original user's previous answers, session variable values, and hasStarted flag, potentially exposing PII like names, emails, and phone numbers. This issue has been fixed in version 3.16.0.
Severity
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
Assigner
References
Impacted products
Vendor Product Version
baptisteArno typebot.io Affected: < 3.16.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-39968 (GCVE-0-2026-39968)

Vulnerability from cvelistv5 – Published: 2026-05-22 18:26 – Updated: 2026-05-26 13:08
VLAI
Title
TypeBot: Cross-Workspace Credential Theft via Bot-Engine Preview Endpoint
Summary
TypeBot is a chatbot builder tool. In versions 3.15.2 and prior, the fix for GHSA-4xc5-wfwc-jw47 ("Credential Theft via Client-Side Script Execution and API Authorization Bypass") is incomplete. While the builder's getCredentials tRPC endpoint was patched with workspace membership checks, the bot-engine runtime still allows any authenticated user to use credentials from any workspace via the preview chat endpoint. The bot-engine's getCredentials() utility function uses a falsy check (if (workspaceId && ...)) for workspace ownership validation. Since the preview endpoint accepts a client-controlled workspaceId field and the Zod schema allows empty strings, an attacker can supply workspaceId: "" to bypass credential ownership verification entirely. Exploitation can result in credential exfiltration, external service abuse, financial damage and a data breach.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-284 - Improper Access Control
  • CWE-522 - Insufficiently Protected Credentials
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
baptisteArno typebot.io Affected: < 3.16.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-3999 (GCVE-0-2026-3999)

Vulnerability from cvelistv5 – Published: 2026-03-13 08:38 – Updated: 2026-03-16 11:27
VLAI
Title
Broken access control vulnerability affecting ID Server
Summary
A broken access control may allow an authenticated user to perform a horizontal privilege escalation. The vulnerability only impacts specific configurations.
Severity
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
Impacted products
Vendor Product Version
Pointsharp ID Server Affected: 0 , < 9.0.0 (semver)
Create a notification for this product.
Credits
Reema AlQahtani, Haboob Cybersecurity Services
Show details on NVD website
To clipboard 

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CVE-2026-40043 (GCVE-0-2026-40043)

Vulnerability from cvelistv5 – Published: 2026-04-13 18:11 – Updated: 2026-04-13 20:49
VLAI
Title
Pachno 1.0.6 Authentication Bypass via runSwitchUser()
Summary
Pachno 1.0.6 contains an authentication bypass vulnerability in the runSwitchUser() action that allows authenticated low-privilege users to escalate privileges by manipulating the original_username cookie. Attackers can set the client-controlled original_username cookie to any value and request a switch to user ID 1 to obtain session tokens or password hashes belonging to administrator accounts.
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
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 (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
pancho Pachno Affected: 1.0.6
Create a notification for this product.
Date Public
2026-04-12 00:00
Credits
LiquidWorm as Gjoko Krstic of Zero Science Lab
Show details on NVD website
To clipboard 

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CVE-2026-40127 (GCVE-0-2026-40127)

Vulnerability from cvelistv5 – Published: 2026-05-25 10:18 – Updated: 2026-05-26 15:20
VLAI
Title
Authorization Bypass Through User-Controlled Key in OutSystems Lifetime
Summary
OutSystems Lifetime is vulnerable to Authorization Bypass Through User-Controlled Key vulnerability in ApplicationID parameter. Any authenticated user, can read the Change Log containing actions performed by other users as well as application name of any application. This issue was fixed in OutSystems Lifetime version 11.28.2.3955
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
OutSystems Lifetime Affected: 0 , < 11.28.2.3955 (semver)
Create a notification for this product.
Credits
Zbigniew Piotrak (AFINE Team)
Show details on NVD website
To clipboard 

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CVE-2026-40252 (GCVE-0-2026-40252)

Vulnerability from cvelistv5 – Published: 2026-04-10 20:52 – Updated: 2026-04-13 16:14
VLAI
Title
Broken Access Control (IDOR) Leading to Cross-Tenant Application Access in FastGPT
Summary
FastGPT is an AI Agent building platform. Prior to 4.14.10.4, Broken Access Control vulnerability (IDOR/BOLA) allows any authenticated team to access and execute applications belonging to other teams by supplying a foreign appId. While the API correctly validates the team token, it does not verify that the requested application belongs to the authenticated team. This leads to cross-tenant data exposure and unauthorized execution of private AI workflows. This vulnerability is fixed in 4.14.10.4.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-284 - Improper Access Control
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
labring FastGPT Affected: < 4.14.10.4
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Show details on NVD website
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CVE-2026-40308 (GCVE-0-2026-40308)

Vulnerability from cvelistv5 – Published: 2026-04-16 21:30 – Updated: 2026-04-17 12:32
VLAI
Title
My Calendar: Unauthenticated Information Disclosure (IDOR) via Multisite switch_to_blog
Summary
My Calendar is a WordPress plugin for managing calendar events. In versions 3.7.6 and below, the mc_ajax_mcjs_action AJAX endpoint, registered for unauthenticated users, passes user-supplied arguments through parse_str() without validation, allowing injection of arbitrary parameters including a site value. On WordPress Multisite installations, this enables an unauthenticated attacker to call switch_to_blog() with an arbitrary site ID and extract calendar events from any sub-site on the network, including private or hidden events. On standard Single Site installations, switch_to_blog() does not exist, causing an uncaught PHP fatal error and crashing the worker thread, creating an unauthenticated denial of service vector. This issue has been fixed in version 3.7.7.
Severity
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
joedolson my-calendar Affected: < 3.7.7
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation

Phase: Architecture and Design

Description:

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

Phases: Architecture and Design, Implementation

Description:

  • 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

Phase: Architecture and Design

Description:

  • 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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