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.

3240 vulnerabilities reference this CWE, most recent first.

CVE-2026-35173 (GCVE-0-2026-35173)

Vulnerability from cvelistv5 – Published: 2026-04-06 17:48 – Updated: 2026-04-06 18:47
VLAI
Title
Chyrp Lite has an IDOR via Mass Assignment in Post Model
Summary
Chyrp Lite is an ultra-lightweight blogging engine. Prior to 2026.01, an IDOR / Mass Assignment issue exists in the Post model that allows authenticated users with post editing permissions (Edit Post, Edit Draft, Edit Own Post, Edit Own Draft) to modify posts they do not own and do not have permission to edit. By passing internal class properties such as id into the post_attributes payload, an attacker can alter the object being instantiated. As a result, further actions are performed on another user’s post rather than the attacker’s own post, effectively enabling post takeover. This vulnerability is fixed in 2026.01.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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-914 - Improper Control of Dynamically-Identified Variables
Assigner
References
Impacted products
Vendor Product Version
xenocrat chyrp-lite Affected: < 2026.01
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CVE-2026-35165 (GCVE-0-2026-35165)

Vulnerability from cvelistv5 – Published: 2026-04-08 18:23 – Updated: 2026-04-08 20:13
VLAI
Title
LORIS has incorrect access checks in document_repository
Summary
LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 21.0.0 to before 27.0.3 and 28.0.1, while the document_repository frontend was restricting file access, the backend endpoint was not correctly verifying access permissions. A user could theoretically download a file that they should not have access to, if they know or can brute force the filename. This vulnerability is fixed in 27.0.3 and 28.0.1.
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 (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
aces Loris Affected: >= 21.0.0, < 27.0.3
Affected: >= 28.0.0, < 28.0.1
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CVE-2026-35147 (GCVE-0-2026-35147)

Vulnerability from cvelistv5 – Published: 2026-07-16 11:04 – Updated: 2026-07-16 11:56
VLAI
Title
HCL DFXServer is affected by a Broken Authentication vulnerability via direct API access.
Summary
HCL DFXServer is affected by a Broken Authentication vulnerability via direct API access. The application fails to verify the user's authentication status when accessing specific API endpoints, allowing an unauthenticated attacker to interact with the APIs and perform unauthorized actions without valid credentials.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
HCL
References
Impacted products
Vendor Product Version
HCL Software DFXServer Affected: version 2.5 and below
Create a notification for this product.
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CVE-2026-35045 (GCVE-0-2026-35045)

Vulnerability from cvelistv5 – Published: 2026-04-06 17:17 – Updated: 2026-04-07 14:29
VLAI
Title
Tandoor Recipes Affected by Private Recipe Exposure and Unauthorized Modification
Summary
Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.4, the PUT /api/recipe/batch_update/ endpoint in Tandoor Recipes allows any authenticated user within a Space to modify any recipe in that Space, including recipes marked as private by other users. This bypasses all object-level authorization checks enforced on standard single-recipe endpoints (PUT /api/recipe/{id}/), enabling forced exposure of private recipes, unauthorized self-grant of access via the shared list, and metadata tampering. This vulnerability is fixed in 2.6.4.
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: poc 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
TandoorRecipes recipes Affected: < 2.6.4
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-35023 (GCVE-0-2026-35023)

Vulnerability from cvelistv5 – Published: 2026-04-08 12:59 – Updated: 2026-07-14 20:00
VLAI
Title
Wimi Teamwork On-Premises < 8.2.0 IDOR via preview.php
Summary
Wimi Teamwork On-Premises versions prior to 8.2.0 contain an insecure direct object reference vulnerability in the preview.php endpoint where the item_id parameter lacks proper authorization checks. Attackers can enumerate sequential item_id values to access and retrieve image previews from other users' private or group conversations, resulting in unauthorized disclosure of sensitive information.
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
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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
Cloud Solutions SAS Wimi Teamwork Affected: 0 , < 8.2.0 (semver)
Create a notification for this product.
Credits
Noa Tchoumak VulnCheck
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CVE-2026-34985 (GCVE-0-2026-34985)

Vulnerability from cvelistv5 – Published: 2026-04-08 18:22 – Updated: 2026-04-10 20:41
VLAI
Title
LORIS has incorrect access checks in media module
Summary
LORIS (Longitudinal Online Research and Imaging System) is a self-hosted web application that provides data- and project-management for neuroimaging research. From 16.1.0 to before 27.0.3 and 28.0.1, While the frontend of the media module filters files that the user should not have access to, the backend was not applying access checks and it would be possible for someone who should not have access to a file to access it if they know the filename. This vulnerability is fixed in 27.0.3 and 28.0.1.
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 (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
aces Loris Affected: >= 16.1.0, < 27.0.3
Affected: >= 28.0.0, < 28.0.1
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CVE-2026-34832 (GCVE-0-2026-34832)

Vulnerability from cvelistv5 – Published: 2026-04-02 19:08 – Updated: 2026-04-03 14:43
VLAI
Title
Scoold: Cross-Account Feedback Deletion (IDOR)
Summary
Scoold is a Q&A and a knowledge sharing platform for teams. Prior to version 1.66.1, Scoold contains an authenticated authorization flaw in feedback deletion that allows any logged-in, low-privilege user to delete another user's feedback post by submitting its ID to POST /feedback/{id}/delete. The handler enforces authentication but does not enforce object ownership (or moderator/admin authorization) before deletion. In verification, a second non-privileged account successfully deleted a victim account's feedback item, and the item immediately disappeared from the feedback listing/detail views. This issue has been patched in version 1.66.1.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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
Erudika scoold Affected: < 1.66.1
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CVE-2026-34602 (GCVE-0-2026-34602)

Vulnerability from cvelistv5 – Published: 2026-04-14 21:29 – Updated: 2026-04-15 13:32
VLAI
Title
Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthorized Enrollment of Arbitrary Users into Courses
Summary
Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, the /api/course_rel_users endpoint is vulnerable to Insecure Direct Object Reference (IDOR), allowing an authenticated attacker to modify the user parameter in the request body to enroll any arbitrary user into any course without proper authorization checks. The backend trusts the user-supplied input for the user field and performs no server-side verification that the requester owns the referenced user ID or has permission to act on behalf of other users. This enables unauthorized manipulation of user-course relationships, potentially granting unintended access to course materials, bypassing enrollment controls, and compromising platform integrity. This issue has been fixed in version 2.0.0-RC.3.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/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
chamilo chamilo-lms Affected: < 2.0.0-RC.3
Create a notification for this product.
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CVE-2026-34592 (GCVE-0-2026-34592)

Vulnerability from cvelistv5 – Published: 2026-06-29 21:47 – Updated: 2026-06-30 13:09
VLAI
Title
Coolify: Cross-Team IDOR via Unscoped Server and Project Lookups Exposes SSH Keys and Infrastructure
Summary
Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.471, Coolify server and project lookups are not scoped to the current team, allowing any authenticated user to access servers and projects belonging to other teams by specifying their IDs directly. This vulnerability is fixed in 4.0.0-beta.471.
Severity
7.7 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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
coollabsio coolify Affected: < 4.0.0-beta.471
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                  },
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                  },
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                    "Technical Impact": "partial"
                  }
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
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          "product": "coolify",
          "vendor": "coollabsio",
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            {
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            }
          ]
        }
      ],
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          "lang": "en",
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        }
      ],
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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      "providerMetadata": {
        "dateUpdated": "2026-06-29T21:47:23.990Z",
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        "discovery": "UNKNOWN"
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      "title": "Coolify: Cross-Team IDOR via Unscoped Server and Project Lookups Exposes SSH Keys and Infrastructure"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-34592",
    "datePublished": "2026-06-29T21:47:23.990Z",
    "dateReserved": "2026-03-30T17:15:52.499Z",
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CVE-2026-34584 (GCVE-0-2026-34584)

Vulnerability from cvelistv5 – Published: 2026-04-02 17:31 – Updated: 2026-04-02 19:09
VLAI
Title
listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)
Summary
listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, bugs in list permission checks allows users in a multi-user environment to access to lists (which they don't have access to) under different scenarios. This only affects multi-user environments with untrusted users. This issue has been patched in version 6.1.0.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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
knadh listmonk Affected: >= 4.1.0, < 6.1.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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                "id": "CVE-2026-34584",
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                "timestamp": "2026-04-02T19:08:49.596406Z",
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        }
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      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
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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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