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.

2790 vulnerabilities reference this CWE, most recent first.

CVE-2026-70185 (GCVE-0-2026-70185)

Vulnerability from cvelistv5 – Published: 2026-10-13 19:00 – Updated: 2026-11-10 20:38
VLAI
Title
Microsoft PowerShell Security Feature Bypass Vulnerability
Summary
Protection mechanism failure in Windows PowerShell allows an authorized attacker to bypass a security feature locally.
Severity
8.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 22:16 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
microsoft CNA
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < 10.0.14393.9612 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.9376 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 21H2 Affected: 10.0.19044.0 , < 10.0.19044.7807 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.7807 (custom)
Create a notification for this product.
Microsoft Windows 11 version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7652 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.7652 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.9711 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 25H2 Affected: 10.0.26200.0 , < 10.0.26200.9711 (custom)
Create a notification for this product.
Microsoft Windows 11 version 26H1 Affected: 10.0.28000.0 , < 10.0.28000.3231 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 26H2 Affected: 10.0.26300.0 , < 10.0.26300.9711 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < 6.2.9200.26434 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < 6.2.9200.26434 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < 6.3.9600.23470 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < 6.3.9600.23470 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.9612 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.9612 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.9376 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.9376 (custom)
Create a notification for this product.
Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5761 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.33650 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.33650 (custom)
Create a notification for this product.
Date Public
2026-10-13 14:00
Show details on NVD website
To clipboard 

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CVE-2026-69865 (GCVE-0-2026-69865)

Vulnerability from cvelistv5 – Published: 2026-09-17 22:55 – Updated: 2026-11-10 21:29 Exclusively Hosted Service
VLAI
Title
Microsoft Container Registry Elevation of Privilege Vulnerability
Summary
Authorization bypass through user-controlled key in Microsoft Container Registry allows an unauthorized attacker to elevate privileges over a network.
Severity
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-25 00:00 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
microsoft CNA
References
Impacted products
Vendor Product Version
Microsoft Azure Container Registry Affected: -
    cpe:2.3:a:microsoft:azure_container_registry:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-17 14:00
Show details on NVD website
To clipboard 

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CVE-2026-69857 (GCVE-0-2026-69857)

Vulnerability from cvelistv5 – Published: 2026-09-03 22:59 – Updated: 2026-11-10 21:29 Exclusively Hosted Service
VLAI
Title
Azure Cosmos DB Spoofing Vulnerability
Summary
Authorization bypass through user-controlled key in Azure Cosmos DB allows an authorized attacker to perform spoofing over a network.
Severity
8.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 13:31 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
microsoft CNA
References
Impacted products
Vendor Product Version
Microsoft Azure Cosmos DB Affected: -
    cpe:2.3:a:microsoft:cosmos_db:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-08 14:00
Show details on NVD website
To clipboard 

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CVE-2026-69558 (GCVE-0-2026-69558)

Vulnerability from cvelistv5 – Published: 2026-08-20 21:47 – Updated: 2026-11-10 22:01 Exclusively Hosted Service
VLAI
Title
Microsoft Partner Center Information Disclosure Vulnerability
Summary
Authorization bypass through user-controlled key in Microsoft Partner Center allows an unauthorized attacker to disclose information over a network.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 13:14 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
microsoft CNA
References
Impacted products
Vendor Product Version
Microsoft Microsoft Partner Center Affected: -
    cpe:2.3:a:microsoft:partner_center:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-20 14:00
Show details on NVD website
To clipboard 

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CVE-2026-69375 (GCVE-0-2026-69375)

Vulnerability from cvelistv5 – Published: 2026-09-08 17:12 – Updated: 2026-11-10 21:31
VLAI
Title
Microsoft Exchange Server Tampering Vulnerability
Summary
Authorization bypass through user-controlled key in Microsoft Exchange Server allows an authorized attacker to perform tampering over a network.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 14:51 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
microsoft CNA
References
Impacted products
Date Public
2026-09-08 14:00
Show details on NVD website
To clipboard 

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CVE-2026-69258 (GCVE-0-2026-69258)

Vulnerability from cvelistv5 – Published: 2026-08-04 15:56 – Updated: 2026-08-05 14:59
VLAI
Title
Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API
Summary
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the unauthenticated POST /api/v1/prediction/:id endpoint accepted an overrideConfig object and unconditionally spread it into internal flowConfig and flowData objects in packages/server/src/utils/buildChatflow.ts and packages/server/src/utils/index.ts without checking apiOverrideStatus. This allowed unauthenticated attackers to inject arbitrary properties into the flow execution context of any public chatflow, overwrite values such as chatId, sessionId, and chatHistory, and control values resolved through $flow.* template variables consumed by flow nodes. This issue is fixed in version 3.1.3.
Severity
8.8 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:56 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
FlowiseAI Flowise Affected: < 3.1.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-69250 (GCVE-0-2026-69250)

Vulnerability from cvelistv5 – Published: 2026-08-04 14:20 – Updated: 2026-08-04 19:52
VLAI
Title
Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration
Summary
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP request to the credential-controlled accessTokenUrl without SSRF protections. Runtime validation confirmed that the endpoint was reachable without authentication, triggered outbound POST requests to an attacker-controlled server, reflected the full remote response body to the caller through tokenInfo, and sent client_id, client_secret, grant_type=refresh_token, and refresh_token in the request body. This issue is fixed in version 3.1.3.
Severity
8.5 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 19:32 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
FlowiseAI Flowise Affected: < 3.1.3
Create a notification for this product.
Show details on NVD website
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CVE-2026-69190 (GCVE-0-2026-69190)

Vulnerability from cvelistv5 – Published: 2026-09-21 17:46 – Updated: 2026-09-21 19:02
VLAI
Title
Graylog: Manager-to-Owner privilege escalation on saved searches and dashboards
Summary
Graylog is a free and open log management platform. From 6.3.0 until 6.3.14, 7.0.9, and 7.1.4, the view update API for saved searches and dashboards permits a user with edit permission but without entity ownership to include a shareRequest that grants owner permissions to an arbitrary account. The selected account can then delete the saved search or dashboard or remove the original owner's access. Graylog Cloud was patched before the advisory was published. This issue is fixed in versions 6.3.14, 7.0.9, and 7.1.4.
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 2026-09-21 19:01 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
Graylog2 graylog2-server Affected: >= 6.3.0, < 6.3.14
Affected: >= 7.0.0, < 7.0.9
Affected: >= 7.1.0, < 7.1.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-69189 (GCVE-0-2026-69189)

Vulnerability from cvelistv5 – Published: 2026-08-18 15:05 – Updated: 2026-08-18 15:32
VLAI
Title
Hoppscotch: Cross-user private data exposure and UserHistory IDOR via team GraphQL resolvers
Summary
Hoppscotch is an open source API development ecosystem. Prior to 2026.6.0, the team, teamMembers.user, RESTHistory, GQLHistory, currentRESTSession, currentGQLSession, environments, globalEnvironments, and settings GraphQL paths expose another workspace member's private User data, while toggleHistoryStarStatus and removeRequestFromHistory in the UserHistory service accept another user's history identifier without enforcing userUid ownership, allowing an authenticated workspace member to read private request history, session data, request contents, authorization headers, environment values, and settings and to modify or delete the victim's private history entries. This issue is fixed in version 2026.6.0.
Severity
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 15:32 UTC
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-862 - Missing Authorization
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
hoppscotch hoppscotch Affected: < 2026.6.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-69160 (GCVE-0-2026-69160)

Vulnerability from cvelistv5 – Published: 2026-08-18 18:04 – Updated: 2026-08-18 18:47
VLAI
Title
OpenList: Arbitrary File Read via Path Prefix Confusion in Share Creation API
Summary
OpenList a file list program that supports multiple storage. Prior to 4.2.4, the share creation and update checks in server/handles/sharing.go use strings.HasPrefix(requested_path, user.BasePath) without enforcing a directory separator boundary. An authenticated user with CanShare permission and a BasePath such as /base can submit a sibling path such as /base2/secret.txt, create a share for the out-of-scope file, and use the public share download or list handlers to read data outside the assigned directory. This issue is fixed in version 4.2.4.
Severity
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 2026-08-18 18:47 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
OpenListTeam OpenList Affected: < 4.2.4
Create a notification for this product.
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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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