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.

3473 vulnerabilities reference this CWE, most recent first.

CVE-2026-2104 (GCVE-0-2026-2104)

Vulnerability from cvelistv5 – Published: 2026-04-08 22:25 – Updated: 2026-04-09 15:43
VLAI
Title
Authorization Bypass Through User-Controlled Key in GitLab
Summary
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to access confidential issues assigned to other users via CSV export due to insufficient authorization checks.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Vendor Product Version
GitLab GitLab Affected: 18.2 , < 18.8.9 (semver)
Affected: 18.9 , < 18.9.5 (semver)
Affected: 18.10 , < 18.10.3 (semver)
    cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Thanks [ahacker1](https://hackerone.com/ahacker1) for reporting this vulnerability through our HackerOne bug bounty program
Show details on NVD website

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CVE-2026-2028 (GCVE-0-2026-2028)

Vulnerability from cvelistv5 – Published: 2026-04-24 03:27 – Updated: 2026-04-24 13:59
VLAI
Title
Maxi Blocks <= 2.1.8 - Missing Authorization to Authenticated (Author+) Media File Deletion via 'old_media_src' Parameter
Summary
The MaxiBlocks Builder plugin for WordPress is vulnerable to arbitrary media file deletion due to insufficient file ownership validation on the 'maxi_remove_custom_image_size' AJAX action in all versions up to, and including, 2.1.8. This makes it possible for authenticated attackers, with Author-level access and above, to delete arbitrary files in the wp-content/uploads directory, including files uploaded by other users and administrators.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Credits
Teerachai Somprasong
Show details on NVD website

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CVE-2026-1992 (GCVE-0-2026-1992)

Vulnerability from cvelistv5 – Published: 2026-03-11 09:25 – Updated: 2026-03-11 13:30
VLAI
Title
ExactMetrics 8.6.0 - 9.0.2 - Authenticated (Custom) Insecure Direct Object Reference to Arbitrary Plugin Installation
Summary
The ExactMetrics – Google Analytics Dashboard for WordPress plugin is vulnerable to Insecure Direct Object Reference in versions 8.6.0 through 9.0.2. This is due to the `store_settings()` method in the `ExactMetrics_Onboarding` class accepting a user-supplied `triggered_by` parameter that is used instead of the current user's ID to check permissions. This makes it possible for authenticated attackers with the `exactmetrics_save_settings` capability to bypass the `install_plugins` capability check by specifying an administrator's user ID in the `triggered_by` parameter, allowing them to install arbitrary plugins and achieve Remote Code Execution. This vulnerability only affects sites on which administrator has given other user types the permission to view reports and can only be exploited by users of that type.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Credits
Ali Sünbül
Show details on NVD website

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CVE-2026-1989 (GCVE-0-2026-1989)

Vulnerability from cvelistv5 – Published: 2026-07-09 08:56 – Updated: 2026-07-09 12:33
VLAI
Title
IDOR in PAVO Inc.'s PAVO Pay
Summary
Authorization bypass through User-Controlled key vulnerability in PAVO Financial Technology Solutions Inc. PAVO Pay allows Exploitation of Trusted Identifiers. This issue affects PAVO Pay: through 09072026. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
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
PAVO Financial Technology Solutions Inc. PAVO Pay Affected: 0 , ≤ 09072026 (custom)
Create a notification for this product.
Date Public
2026-07-09 08:47
Credits
Ahmet Umut OĞURLU
Show details on NVD website

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CVE-2026-1987 (GCVE-0-2026-1987)

Vulnerability from cvelistv5 – Published: 2026-02-14 06:42 – Updated: 2026-04-08 17:34
VLAI
Title
Scheduler Widget <= 0.1.6 - Insecure Direct Object Reference to Authenticated (Subscriber+) Arbitrary Event Modification
Summary
The Scheduler Widget plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 0.1.6. This is due to the `scheduler_widget_ajax_save_event()` function lacking proper authorization checks and ownership verification when updating events. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify any event in the scheduler via the `id` parameter granted they have knowledge of the event ID.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Vendor Product Version
morelmathieuj Scheduler Widget Affected: 0 , ≤ 0.1.6 (semver)
Create a notification for this product.
Credits
MD. TAREQ AHAMED JONY
Show details on NVD website

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CVE-2026-1947 (GCVE-0-2026-1947)

Vulnerability from cvelistv5 – Published: 2026-03-15 01:19 – Updated: 2026-04-08 17:16
VLAI
Title
NEX-Forms – Ultimate Forms Plugin for WordPress <= 9.1.9 - Missing Authorization to Unauthenticated Arbitrary Form Entry Modification via nf_set_entry_update_id
Summary
The NEX-Forms – Ultimate Forms Plugin for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 9.1.9 via the submit_nex_form() function due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to to overwrite arbitrary form entries via the 'nf_set_entry_update_id' parameter.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Credits
Youssef Elouaer
Show details on NVD website

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CVE-2026-1883 (GCVE-0-2026-1883)

Vulnerability from cvelistv5 – Published: 2026-03-15 01:19 – Updated: 2026-04-08 16:55
VLAI
Title
Wicked Folders <= 4.1.0 - Insecure Direct Object Reference to Authenticated (Contributor+) Arbitrary Folder Deletion
Summary
The Wicked Folders – Folder Organizer for Pages, Posts, and Custom Post Types plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.1.0 via the delete_folders() function due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Contributor-level access and above, to delete arbitrary folders created by other users.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Credits
Youssef Elouaer
Show details on NVD website

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CVE-2026-1881 (GCVE-0-2026-1881)

Vulnerability from cvelistv5 – Published: 2026-05-21 01:26 – Updated: 2026-05-21 14:24
VLAI
Title
Broadstreet <= 1.52.2 - Authenticated (Subscriber+) Private Post Meta Disclosure via get_sponsored_meta
Summary
The Broadstreet plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.52.2 via the get_sponsored_meta AJAX action due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to disclose any private post metadata.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Vendor Product Version
broadstreetads Broadstreet Affected: 0 , ≤ 1.52.2 (semver)
Create a notification for this product.
Credits
Tarcísio Luchesi De Almeida Silva
Show details on NVD website

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CVE-2026-1704 (GCVE-0-2026-1704)

Vulnerability from cvelistv5 – Published: 2026-03-13 07:23 – Updated: 2026-04-08 17:21
VLAI
Title
Appointment Booking Calendar <= 1.6.9.29 - Insecure Direct Object Reference to Authenticated (Staff+) Sensitive Information Exposure
Summary
The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.6.9.29. This is due to the `get_item_permissions_check` method granting access to users with the `ssa_manage_appointments` capability without validating staff ownership of the requested appointment. This makes it possible for authenticated attackers, with custom-level access and above (users granted the ssa_manage_appointments capability, such as Team Members), to view appointment records belonging to other staff members and access sensitive customer personally identifiable information via the appointment ID parameter.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Impacted products
Credits
Itthidej Aramsri
Show details on NVD website

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CVE-2026-1664 (GCVE-0-2026-1664)

Vulnerability from cvelistv5 – Published: 2026-02-03 11:39 – Updated: 2026-02-03 14:46
VLAI
Title
Insecure Direct Object Reference (IDOR) via Header-Based Email Routing
Summary
Summary An Insecure Direct Object Reference has been found to exist in `createHeaderBasedEmailResolver()` function within the Cloudflare Agents SDK. The issue occurs because the `Message-ID` and `References` headers are parsed to derive the target agentName and agentId without proper validation or origin checks, allowing an external attacker with control of these headers to route inbound mail to arbitrary Durable Object instances and namespaces . Root cause The `createHeaderBasedEmailResolver()` function lacks cryptographic verification or origin validation for the headers used in the routing logic, effectively allowing external input to dictate internal object routing. Impact Insecure Direct Object Reference (IDOR) in email routing lets an attacker steer inbound mail to arbitrary Agent instances via spoofed Message-ID. Mitigation: * PR: https://github.com/cloudflare/agents/blob/main/docs/email.md ] provides the necessary architectural context for coding agents to mitigate the issue by refactoring the resolver to enforce strict identity boundaries. * Agents-sdk users should upgrade to agents@0.3.7
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
Affected: 0.0.104 , ≤ 0.3.6 (semver)
Credits
asukalangley
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.