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-2026-42609 (GCVE-0-2026-42609)

Vulnerability from cvelistv5 – Published: 2026-05-11 15:03 – Updated: 2026-05-14 17:56
VLAI
Title
Grav: Administrative Account Disruption and Privilege De-escalation via User Overwrite Logic
Summary
Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user (with only user creation permissions) to overwrite existing accounts, including the primary administrator. By creating a new user with a username that already exists, the system updates the existing account's metadata and permissions instead of rejecting the request. This leads to a Denial of Service (DoS) on administrative functions and Privilege De-escalation of the root account. This vulnerability is fixed in 2.0.0-beta.2.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
CWE
  • CWE-269 - Improper Privilege Management
  • CWE-285 - Improper Authorization
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-837 - Improper Enforcement of a Single, Unique Action
Assigner
References
Impacted products
Vendor Product Version
getgrav grav Affected: < 2.0.0-beta.2
Create a notification for this product.
Show details on NVD website
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CVE-2026-42725 (GCVE-0-2026-42725)

Vulnerability from cvelistv5 – Published: 2026-05-27 09:49 – Updated: 2026-05-27 10:53
VLAI
Title
WordPress Checkout Files Upload for WooCommerce plugin <= 2.2.5 - Insecure Direct Object References (IDOR) vulnerability
Summary
Authorization Bypass Through User-Controlled Key vulnerability in WP Wham Checkout Files Upload for WooCommerce checkout-files-upload-woocommerce allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Checkout Files Upload for WooCommerce: from n/a through <= 2.2.5.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
WP Wham Checkout Files Upload for WooCommerce Affected: 0 , ≤ 2.2.5 (custom)
Create a notification for this product.
Date Public
2026-05-27 11:08
Credits
devploit | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-42736 (GCVE-0-2026-42736)

Vulnerability from cvelistv5 – Published: 2026-05-27 09:49 – Updated: 2026-05-27 10:52
VLAI
Title
WordPress BP Better Messages plugin <= 2.14.16 - Insecure Direct Object References (IDOR) vulnerability
Summary
Authorization Bypass Through User-Controlled Key vulnerability in wordplus BP Better Messages bp-better-messages allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects BP Better Messages: from n/a through <= 2.14.16.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
wordplus BP Better Messages Affected: 0 , ≤ 2.14.16 (custom)
Create a notification for this product.
Date Public
2026-05-27 11:08
Credits
dodoh4t | Patchstack Bug Bounty Program
Show details on NVD website
To clipboard 

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CVE-2026-42889 (GCVE-0-2026-42889)

Vulnerability from cvelistv5 – Published: 2026-05-12 19:30 – Updated: 2026-05-13 12:32
VLAI
Title
Relay Server WebSocket authentication bypass when token is omitted
Summary
Relay adds real-time collaboration to Obsidian. Relay Server versions 0.9.0 through 0.9.6 contain an authentication bypass in the multi-document WebSocket endpoints. When authentication is configured, WebSocket connections without a token query parameter were incorrectly treated as having full server permissions. An unauthenticated network attacker who knows or guesses a document ID could connect to the document sync WebSocket and read or modify document contents without a valid document token. This vulnerability is fixed in 0.9.7.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
  • CWE-863 - Incorrect Authorization
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
No-Instructions relay-server Affected: >= 0.9.0, < 0.9.7
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-4330 (GCVE-0-2026-4330)

Vulnerability from cvelistv5 – Published: 2026-04-08 07:43 – Updated: 2026-04-08 17:32
VLAI
Title
Blog2Social: Social Media Auto Post & Scheduler <= 8.8.3 - Authenticated (Subscriber+) Insecure Direct Object Reference to Arbitrary Post Schedule Modification via 'b2s_id' Parameter
Summary
The Blog2Social: Social Media Auto Post & Scheduler plugin for WordPress is vulnerable to authorization bypass through user-controlled key in all versions up to, and including, 8.8.3. This is due to the plugin's AJAX handlers failing to validate that the user-supplied 'b2s_id' parameter belongs to the current user before performing UPDATE and DELETE operations. This makes it possible for authenticated attackers, with Subscriber-level access and above, to modify, reschedule, or delete other users' scheduled social media posts.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Credits
Mariusz Maik
Show details on NVD website
To clipboard 

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CVE-2026-43883 (GCVE-0-2026-43883)

Vulnerability from cvelistv5 – Published: 2026-05-11 20:41 – Updated: 2026-05-12 16:38
VLAI
Title
WWBN AVideo: IDOR in PayPalYPT agreementCancel.json.php Allows Any Authenticated User to Cancel Arbitrary PayPal Subscription Agreements
Summary
WWBN AVideo is an open source video platform. In versions up to and including 29.0, plugin/PayPalYPT/agreementCancel.json.php cancels a PayPal billing agreement using an attacker-supplied agreement parameter without verifying that the authenticated user owns the agreement. A low-privilege authenticated user who learns or obtains another user's PayPal billing agreement ID can silently suspend the victim's recurring subscription, causing revenue loss to the platform and loss of paid service to the victim. Commit 0da3dcff1eda2f497694bf82b559829471c292c2 contains an updated fix.
Severity
4.2 (Medium)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
WWBN AVideo Affected: <= 29.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-43890 (GCVE-0-2026-43890)

Vulnerability from cvelistv5 – Published: 2026-05-11 21:09 – Updated: 2026-05-13 14:39
VLAI
Title
Outline: IDOR in subscriptions.create allows cross-tenant subscription on private documents (sibling of GHSA-23jj-rp48-w7q7)
Summary
Outline is a service that allows for collaborative documentation. From 0.84.0 to 1.7.0, the subscriptions.create API endpoint in server/routes/api/subscriptions/subscriptions.ts exhibits a broken authorization pattern. When both collectionId and documentId are supplied in the request, the route handler authorizes ONLY the collection branch (line 125 if (collectionId)), while the downstream subscriptionCreator command at server/commands/subscriptionCreator.ts writes the subscription against the documentId (which was never validated). The result is a subscription record pinning the attacker's user to a victim document the attacker has no read access to, on any team in the instance. The schema (server/routes/api/subscriptions/schema.ts) only enforces "at least one of collectionId/documentId" via .refine() — it does NOT enforce mutual exclusivity, so passing both is a valid, schema-conforming request. This vulnerability is fixed in 1.7.1.
Severity
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
outline outline Affected: >= 0.82.1, < 1.7.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-43934 (GCVE-0-2026-43934)

Vulnerability from cvelistv5 – Published: 2026-05-26 14:54 – Updated: 2026-05-26 17:40
VLAI
Title
e107: Broken Access Control in e107 comment edit allows cross-user comment modification
Summary
e107 is a content management system (CMS). Prior to 2.3.4, a Broken Access Control vulnerability exists in the application, allowing an unauthorized authenticated user to edit comments posted by others. This stems from inadequate server-side access control validation, where the application depends only on a predictable identifier in the request to determine which comment to edit, without confirming the requesting user’s ownership of the comment. This vulnerability is fixed in 2.3.4.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
  • CWE-284 - Improper Access Control
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
e107inc e107 Affected: < 2.3.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-4400 (GCVE-0-2026-4400)

Vulnerability from cvelistv5 – Published: 2026-03-31 10:12 – Updated: 2026-03-31 13:30
VLAI
Title
Multiple vulnerabilities in 1millionbot Millie chatbot
Summary
Insecure Direct Object Reference (IDOR) vulnerability in 1millionbot Millie chat that allows private conversations of other users being viewed by simply changing the conversation ID. The vulnerability is present in the endpoint 'api.1millionbot.com/api/public/conversations/' and, if exploited, could allow a remote attacker to access other users private chatbot conversations, revealing sensitive or confidential data without requiring credentials or impersonating users. In order for the vulnerability to be exploited, the attacker must have the user's conversation ID.
Severity
7 (High)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
Impacted products
Vendor Product Version
1millionbot Millie chat Affected: 3.6.0 (custom)
Create a notification for this product.
Credits
David Utón Amaya (m3n0sd0n4ld)
Show details on NVD website
To clipboard 

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CVE-2026-44341 (GCVE-0-2026-44341)

Vulnerability from cvelistv5 – Published: 2026-05-12 22:39 – Updated: 2026-05-13 14:32
VLAI
Title
GoJobs: Insecure Direct Object Reference (IDOR) in Job Retrieval Endpoint
Summary
GoJobs is a REST API for a Job Board platform. The application exposes a job retrieval endpoint that allows unauthenticated users to access job details by directly manipulating object identifiers. The endpoint lacks proper authentication and authorization checks, resulting in unauthorized access to job data.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-284 - Improper Access Control
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
karnop gojobs Affected: <= 2cc74a78dcf101c089ea209f2aaefef0674f6b55
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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