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-2026-5845 (GCVE-0-2026-5845)

Vulnerability from cvelistv5 – Published: 2026-04-21 22:42 – Updated: 2026-04-22 18:04
VLAI
Title
Improper authorization fallback allows scoped user-to-server token installation escape in GitHub Enterprise Server
Summary
An improper authorization vulnerability in scoped user-to-server (ghu_) token authorization in GitHub Enterprise Server allows an authenticated attacker to access private repositories outside the intended installation scope, which can include write operations, via an authorization fallback that treated a revoked/deleted installation as a global installation context, which could be chained with token revocation timing and SSH push attribution to obtain and reuse a victim-scoped token. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.1, 3.19.5, 3.18.8, 3.17.14, 3.16.17, 3.15.21, and 3.14.26. This vulnerability was reported via the GitHub Bug Bounty program.
Severity
7.2 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
Impacted products
Vendor Product Version
GitHub Enterprise Server Affected: 3.20.0 , < 3.20.1 (semver)
Affected: 3.19.0 , ≤ 3.19.4 (semver)
Affected: 3.18.0 , ≤ 3.18.7 (semver)
Affected: 3.17.0 , ≤ 3.17.13 (semver)
Affected: 3.16.0 , ≤ 3.16.16 (semver)
Affected: 3.15.0 , ≤ 3.15.20 (semver)
Affected: 3.14.0 , ≤ 3.14.25 (semver)
Create a notification for this product.
Credits
ahacker1
Show details on NVD website
To clipboard 

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CVE-2026-6001 (GCVE-0-2026-6001)

Vulnerability from cvelistv5 – Published: 2026-05-12 09:53 – Updated: 2026-05-12 12:20
VLAI
Title
IDOR in Abis Technology's BAPSİS
Summary
Authorization bypass through User-Controlled key vulnerability in ABIS Technology Ltd. Co. BAPSİS allows Exploitation of Trusted Identifiers. This issue affects BAPSİS: before v.202604152042.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
Impacted products
Vendor Product Version
ABIS Technology Ltd. Co. BAPSİS Affected: 0 , < v.202604152042 (custom)
Create a notification for this product.
Date Public
2026-05-12 09:48
Credits
Tolga DEMİREL
Show details on NVD website
To clipboard 

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CVE-2026-6008 (GCVE-0-2026-6008)

Vulnerability from cvelistv5 – Published: 2026-05-14 12:24 – Updated: 2026-05-14 13:48
VLAI
Title
IDOR in Im Park's DijiDemi
Summary
Authorization bypass through User-Controlled key vulnerability in Im Park Information Technology, Electronics, Press, Publishing and Advertising, Education Ltd. Co. DijiDemi allows Privilege Abuse. This issue affects DijiDemi: from v4.5.12.1 before v4.5.13.0.
Severity
6.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
Impacted products
Date Public
2026-05-14 12:19
Credits
Muhammet Emirhan SÜMER
Show details on NVD website
To clipboard 

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CVE-2026-6063 (GCVE-0-2026-6063)

Vulnerability from cvelistv5 – Published: 2026-05-14 05:34 – Updated: 2026-05-14 13:21
VLAI
Title
Authorization Bypass Through User-Controlled Key in GitLab
Summary
GitLab has remediated an issue in GitLab EE affecting all versions from 11.10 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that under certain conditions could have allowed an authenticated user with developer-role permissions to remove code owner approval rules from merge requests due to improper access control.
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
Vendor Product Version
GitLab GitLab Affected: 11.10 , < 18.9.7 (semver)
Affected: 18.10 , < 18.10.6 (semver)
Affected: 18.11 , < 18.11.3 (semver)
    cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Thanks [pollito](https://hackerone.com/pollito) for reporting this vulnerability through our HackerOne bug bounty program
Show details on NVD website
To clipboard 

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CVE-2026-6072 (GCVE-0-2026-6072)

Vulnerability from cvelistv5 – Published: 2026-05-20 01:25 – Updated: 2026-05-20 13:13
VLAI
Title
Oliver POS <= 2.4.2.6 - Unauthenticated Authorization Bypass Through User-Controlled Key to 'OliverAuth' Header
Summary
The Oliver POS – A WooCommerce Point of Sale (POS) plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in all versions up to and including 2.4.2.6. The plugin protects its entire /wp-json/pos-bridge/* REST API namespace through the oliver_pos_rest_authentication() permission callback, which uses a loose PHP comparison (==) to compare the attacker-supplied 'OliverAuth' header value against the 'oliver_pos_authorization_token' option. On fresh installations where the admin has not yet completed the connection flow, this option is unset (get_option returns false). Due to PHP's type juggling, the loose comparison '0' == false evaluates to true, allowing an unauthenticated attacker to bypass authentication by sending 'OliverAuth: 0'. This grants full access to all POS API endpoints, enabling attackers to read user data (including administrator details), update user profiles (including email addresses), and delete non-admin users. An admin account email reset can lead to site takeover.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Credits
Hunter Jensen
Show details on NVD website
To clipboard 

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CVE-2026-6206 (GCVE-0-2026-6206)

Vulnerability from cvelistv5 – Published: 2026-05-14 08:24 – Updated: 2026-05-14 10:42
VLAI
Title
MW WP Form <= 5.1.2 - Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'post_id' Query Parameter
Summary
The MW WP Form plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 5.1.2 via the _get_post_property_from_querystring() function due to insufficient restrictions on which posts can be included. This makes it possible for unauthenticated attackers to extract data from password protected, private, or draft posts that they should not have access to.
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-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
websoudan MW WP Form Affected: 0 , ≤ 5.1.2 (semver)
Create a notification for this product.
Credits
Kirasec
Show details on NVD website
To clipboard 

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CVE-2026-6375 (GCVE-0-2026-6375)

Vulnerability from cvelistv5 – Published: 2026-04-23 20:07 – Updated: 2026-04-24 18:19
VLAI
Title
Authorization bypass through User-Controlled key in SpiceJet Online Booking System
Summary
A vulnerability in SpiceJet’s booking API allows unauthenticated users to query passenger name records (PNRs) without any access controls. Because PNR identifiers follow a predictable pattern, an attacker could systematically enumerate valid records and obtain associated passenger names. This flaw stems from missing authorization checks on an endpoint intended for authenticated profile access.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Assigner
References
Impacted products
Date Public
2026-04-23 16:00
Credits
Owais Shaikh reported these vulnerabilities to CISA.
Show details on NVD website
To clipboard 

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CVE-2026-6542 (GCVE-0-2026-6542)

Vulnerability from cvelistv5 – Published: 2026-04-30 21:16 – Updated: 2026-05-01 15:00
VLAI
Title
Monitor API allows cross-user read of transaction logs and deletion of build data via flow_id
Summary
IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
ibm
References
URL Tags
https://www.ibm.com/support/pages/node/7270886 vendor-advisorypatch
Impacted products
Vendor Product Version
IBM Langflow OSS Affected: 1.0.0 , ≤ 1.8.4 (semver)
    cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:ibm:langflow_oss:1.8.4:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-6566 (GCVE-0-2026-6566)

Vulnerability from cvelistv5 – Published: 2026-05-20 05:31 – Updated: 2026-05-20 15:54
VLAI
Title
Photo Gallery, Sliders, Proofing and Themes <= 4.2.0 - Insecure Direct Object Reference to Authenticated (Subscriber+) Image Deletion via REST API
Summary
The Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to and including 4.2.0. This is due to insufficient object-level authorization in the image deletion REST flow where the permission callback for DELETE /imagely/v1/images/{id} only checks 'NextGEN Manage gallery' permissions and does not enforce gallery ownership or 'NextGEN Manage others gallery' permissions. This makes it possible for authenticated attackers, with Subscriber-level privileges and 'NextGEN Manage gallery' capability, to delete gallery images belonging to other users as well as their associated image files from disk when deleteImg is enabled (default).
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
Bao Luu Gia Nguyen
Show details on NVD website
To clipboard 

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CVE-2026-6570 (GCVE-0-2026-6570)

Vulnerability from cvelistv5 – Published: 2026-04-19 11:00 – Updated: 2026-04-20 16:23
VLAI
Title
kodcloud KodExplorer systemMember.class.php initInstall authorization
Summary
A security flaw has been discovered in kodcloud KodExplorer up to 4.52. Affected is the function initInstall of the file /app/controller/systemMember.class.php. Performing a manipulation of the argument path results in authorization bypass. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
2.7 (Low)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
2.7 (Low)
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/358204 vdb-entrytechnical-description
https://vuldb.com/vuln/358204/cti signaturepermissions-required
https://vuldb.com/submit/789983 third-party-advisory
https://vulnplus-note.wetolink.com/share/byd7AQVs42VY broken-linkexploit
Impacted products
Vendor Product Version
kodcloud KodExplorer Affected: 4.0
Affected: 4.1
Affected: 4.2
Affected: 4.3
Affected: 4.4
Affected: 4.5
Affected: 4.6
Affected: 4.7
Affected: 4.8
Affected: 4.9
Affected: 4.10
Affected: 4.11
Affected: 4.12
Affected: 4.13
Affected: 4.14
Affected: 4.15
Affected: 4.16
Affected: 4.17
Affected: 4.18
Affected: 4.19
Affected: 4.20
Affected: 4.21
Affected: 4.22
Affected: 4.23
Affected: 4.24
Affected: 4.25
Affected: 4.26
Affected: 4.27
Affected: 4.28
Affected: 4.29
Affected: 4.30
Affected: 4.31
Affected: 4.32
Affected: 4.33
Affected: 4.34
Affected: 4.35
Affected: 4.36
Affected: 4.37
Affected: 4.38
Affected: 4.39
Affected: 4.40
Affected: 4.41
Affected: 4.42
Affected: 4.43
Affected: 4.44
Affected: 4.45
Affected: 4.46
Affected: 4.47
Affected: 4.48
Affected: 4.49
Affected: 4.50
Affected: 4.51
Affected: 4.52
    cpe:2.3:a:kodcloud:kodexplorer:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
vulnplusbot (VulDB User) VulDB CNA Team
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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