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.

3391 vulnerabilities reference this CWE, most recent first.

CVE-2026-30857 (GCVE-0-2026-30857)

Vulnerability from cvelistv5 – Published: 2026-03-07 16:33 – Updated: 2026-03-09 18:24
VLAI
Title
WeKnora: Unauthorized Cross‑Tenant Knowledge Base Cloning
Summary
WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a cross-tenant authorization bypass in the knowledge base copy endpoint allows any authenticated user to clone (duplicate) another tenant’s knowledge base into their own tenant by knowing/guessing the source knowledge base ID. This enables bulk data exfiltration (document/FAQ content) across tenants. This issue has been patched in version 0.3.0.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:H/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
Tencent WeKnora Affected: < 0.3.0
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Show details on NVD website
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CVE-2026-30843 (GCVE-0-2026-30843)

Vulnerability from cvelistv5 – Published: 2026-03-06 19:30 – Updated: 2026-03-09 20:34
VLAI
Title
Wekan has Cross-Board IDOR in Custom Fields Update Endpoints
Summary
Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 have a critical Insecure Direct Object Reference (IDOR) issue which could allow unauthorized users to modify custom fields across boards through its custom fields update endpoints, potentially leading to unauthorized data manipulation. The PUT /api/boards/:boardId/custom-fields/:customFieldId endpoint in Wekan validates that the authenticated user has access to the specified boardId, but the subsequent database update uses only the custom field's _id as a filter without confirming the field actually belongs to that board. This means an attacker who owns any board can modify custom fields on any other board by supplying a foreign custom field ID, and the same flaw exists in the POST, PUT, and DELETE endpoints for dropdown items under custom fields. The required custom field IDs can be obtained by exporting a board (which only needs read access), since the exported JSON includes the IDs of all board components. The authorization check is performed against the wrong resource, allowing cross-board custom field manipulation. This issue has been fixed in version 8.34.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/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
Wekan Wekan Affected: >= 8.32, < 8.34
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-30825 (GCVE-0-2026-30825)

Vulnerability from cvelistv5 – Published: 2026-03-07 05:13 – Updated: 2026-03-09 20:42
VLAI
Title
hoppscotch: IDOR - Any authenticated user can revoke any other user's Personal Access Token
Summary
hoppscotch is an open source API development ecosystem. Prior to version 2026.2.1, the DELETE /v1/access-tokens/revoke endpoint allows any authenticated user to delete any other user's PAT by providing its ID, with no ownership verification. This issue has been patched in version 2026.2.1.
Severity
0 (None)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A: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
hoppscotch hoppscotch Affected: < 2026.2.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-30823 (GCVE-0-2026-30823)

Vulnerability from cvelistv5 – Published: 2026-03-07 05:10 – Updated: 2026-03-09 20:44
VLAI
Title
Flowise: IDOR leading to Account Takeover and Enterprise Feature Bypass via SSO Configuration
Summary
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to version 3.0.13, there is an IDOR vulnerability, leading to account takeover and enterprise feature bypass via SSO configuration. This issue has been patched in version 3.0.13.
Severity
8.8 (High)
CVSS:3.0/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 (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
Assigner
References
Impacted products
Vendor Product Version
FlowiseAI Flowise Affected: < 3.0.13
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-30231 (GCVE-0-2026-30231)

Vulnerability from cvelistv5 – Published: 2026-03-06 21:10 – Updated: 2026-03-09 20:54
VLAI
Title
Flare: Private File IDOR via raw/direct endpoints
Summary
Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version 1.7.2, the raw and direct file routes only block unauthenticated users from accessing private files. Any authenticated, non‑owner user who knows the file URL can retrieve the content, which is inconsistent with stricter checks used by other endpoints. This issue has been patched in version 1.7.2.
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
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
FlintSH Flare Affected: < 1.7.2
Create a notification for this product.
Show details on NVD website
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CVE-2026-30230 (GCVE-0-2026-30230)

Vulnerability from cvelistv5 – Published: 2026-03-06 21:09 – Updated: 2026-03-09 20:54
VLAI
Title
Flare: Password‑Protected Thumbnail Bypass
Summary
Flare is a Next.js-based, self-hostable file sharing platform that integrates with screenshot tools. Prior to version 1.7.2, the thumbnail endpoint does not validate the password for password‑protected files. It checks ownership/admin for private files but skips password verification, allowing thumbnail access without the password. This issue has been patched in version 1.7.2.
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
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
FlintSH Flare Affected: < 1.7.2
Create a notification for this product.
Show details on NVD website
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CVE-2026-29204 (GCVE-0-2026-29204)

Vulnerability from cvelistv5 – Published: 2026-05-12 17:46 – Updated: 2026-05-12 21:57
VLAI
Summary
Insufficient ownership check in `clientarea.php` allows an authenticated client area user to submit requests using another user’s `addonId` without any ownership validation leading to unauthorized access to the victim's account.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Insecure Direct Object Reference (IDOR)
Assigner
References
Impacted products
Vendor Product Version
WebPros WHMCS Affected: 7.4.0 , ≤ 18.12.2 (semver)
Affected: 18.13.0 , < 18.13.3 (semver)
Affected: 9.0.0 , < 9.0.4 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-29200 (GCVE-0-2026-29200)

Vulnerability from cvelistv5 – Published: 2026-05-04 05:42 – Updated: 2026-05-04 19:44
VLAI
Summary
A critical IDOR vulnerability has been discovered in Comet Backup affecting all versions from 20.11.0 to 26.1.1 and 26.2.1. The vulnerability allows a tenant administrator to impersonate any end-user account of other tenants on the same server via a vulnerable API call.
Severity
9.9 (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:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Insecure Direct Object Reference (IDOR)
Assigner
References
Impacted products
Vendor Product Version
WebPros Comet Backup Affected: 20.11.0 , < 26.1.2 (semver)
Affected: 26.2.0 , < 26.2.2 (semver)
Create a notification for this product.
Show details on NVD website
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CVE-2026-29189 (GCVE-0-2026-29189)

Vulnerability from cvelistv5 – Published: 2026-03-19 23:05 – Updated: 2026-03-20 14:59
VLAI
Title
SuiteCRM has a REST API V8 IDOR: Missing ACL Checks on User Preferences and Relationship Endpoints
Summary
SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to versions 7.15.1 and 8.9.3, the SuiteCRM REST API V8 has missing ACL (Access Control List) checks on several endpoints, allowing authenticated users to access and manipulate data they should not have permission to interact with. Versions 7.15.1 and 8.9.3 patch the issue.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A: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
SuiteCRM SuiteCRM Affected: < 7.15.1
Affected: >= 8.0.0, < 8.9.3
Create a notification for this product.
Show details on NVD website
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CVE-2026-29071 (GCVE-0-2026-29071)

Vulnerability from cvelistv5 – Published: 2026-03-26 23:54 – Updated: 2026-03-27 20:06
VLAI
Title
Open WebUI's Insecure Direct Object Reference (IDOR) allows access to other users' memories
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, any authenticated user can read other users' private memories via `/api/v1/retrieval/query/collection`. Version 0.8.6 patches the issue.
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
Assigner
References
Impacted products
Vendor Product Version
open-webui open-webui Affected: < 0.8.6
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    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-29071",
                "options": [
                  {
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-03-27T20:06:23.684368Z",
                "version": "2.0.3"
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          "value": "Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, any authenticated user can read other users\u0027 private memories via `/api/v1/retrieval/query/collection`. Version 0.8.6 patches the issue."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
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      "providerMetadata": {
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          "url": "https://github.com/open-webui/open-webui/security/advisories/GHSA-w9f8-gxf9-rhvw"
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      "source": {
        "advisory": "GHSA-w9f8-gxf9-rhvw",
        "discovery": "UNKNOWN"
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      "title": "Open WebUI\u0027s Insecure Direct Object Reference (IDOR) allows access to other users\u0027 memories"
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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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