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.

3251 vulnerabilities reference this CWE, most recent first.

CVE-2021-3964 (GCVE-0-2021-3964)

Vulnerability from cvelistv5 – Published: 2021-12-01 11:25 – Updated: 2024-08-03 17:09
VLAI
Title
Authorization Bypass Through User-Controlled Key in elgg/elgg
Summary
elgg is vulnerable to Authorization Bypass Through User-Controlled Key
Severity
4.3 (Medium)
CVSS:3.0/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
elgg elgg/elgg Affected: unspecified , < 3.3.22 (custom)
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CVE-2021-3852 (GCVE-0-2021-3852)

Vulnerability from cvelistv5 – Published: 2022-01-12 10:15 – Updated: 2024-08-03 17:09
VLAI
Title
Authorization Bypass Through User-Controlled Key in weseek/growi
Summary
growi is vulnerable to Authorization Bypass Through User-Controlled Key
Severity
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
weseek weseek/growi Affected: unspecified , < 4.4.8 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2020-37094 (GCVE-0-2020-37094)

Vulnerability from cvelistv5 – Published: 2026-02-03 22:01 – Updated: 2026-07-15 01:24
VLAI
Title
EspoCRM 5.7.0 < 5.9.0 - Two-Factor Authentication Bypass via Auth Token Reuse Between Accounts with Identical Passwords
Summary
EspoCRM 5.7.0 prior to 5.9.0 contains an authentication token reuse vulnerability that allows authenticated attackers to bypass two-factor authentication by exploiting token-to-password-hash mapping in application/Espo/Core/Utils/Authentication/Espo.php. Attackers can obtain an authentication token for a controlled account and replay it against any victim account sharing the same password, since tokens are bound to password hashes rather than unique per-user values, bypassing the victim's 2FA protections.
Severity
8.6 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
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: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-303 - Incorrect Implementation of Authentication Algorithm
Assigner
References
Impacted products
Vendor Product Version
EspoCRM EspoCRM Affected: 5.7.0 , < 5.9.0 (semver)
Create a notification for this product.
Date Public
2020-04-24 00:00
Credits
Besim ALTINOK İsmail BOZKURT
Show details on NVD website
To clipboard 

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CVE-2020-37008 (GCVE-0-2020-37008)

Vulnerability from cvelistv5 – Published: 2026-01-29 14:28 – Updated: 2026-05-12 20:46
VLAI
Title
EasyPMS 1.0.0 - Authentication Bypass
Summary
EasyPMS 1.0.0 contains an authentication bypass vulnerability that allows unprivileged users to manipulate SQL queries in JSON requests to access admin user information. Attackers can exploit weak input validation by injecting single quotes in ID parameters and modify admin user passwords without proper token authentication.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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
Elektraweb EasyPMS Affected: 1.0.0
Create a notification for this product.
Date Public
2020-10-01 00:00
Credits
Jok3r
Show details on NVD website
To clipboard 

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CVE-2020-36923 (GCVE-0-2020-36923)

Vulnerability from cvelistv5 – Published: 2026-01-06 15:52 – Updated: 2026-01-06 18:56
VLAI
Title
Sony BRAVIA Digital Signage 1.7.8 Client-Side Protection Bypass via IDOR
Summary
Sony BRAVIA Digital Signage 1.7.8 contains an insecure direct object reference vulnerability that allows attackers to bypass authorization controls. Attackers can access hidden system resources like '/#/content-creation' by manipulating client-side access restrictions.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Date Public
2020-12-02 00:00
Credits
LiquidWorm as Gjoko Krstic of Zero Science Lab
Show details on NVD website
To clipboard 

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CVE-2020-36895 (GCVE-0-2020-36895)

Vulnerability from cvelistv5 – Published: 2025-12-10 20:54 – Updated: 2025-12-11 18:53
VLAI
Title
EIBIZ i-Media Server Digital Signage 3.8.0 Unauthenticated Configuration Disclosure
Summary
EIBIZ i-Media Server Digital Signage 3.8.0 contains an unauthenticated configuration disclosure vulnerability that allows remote attackers to access sensitive configuration files via direct object reference. Attackers can retrieve the SiteConfig.properties file through an HTTP GET request, exposing administrative credentials, database connection details, and system configuration information.
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
SSVC
Exploitation: poc 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
EIBIZ Co.,Ltd. i-Media Server Digital Signage Affected: 0 , ≤ 3.8.0 (semver)
Create a notification for this product.
Date Public
2020-08-21 00:00
Credits
LiquidWorm as Gjoko Krstic of Zero Science Lab
Show details on NVD website
To clipboard 

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CVE-2020-26068 (GCVE-0-2020-26068)

Vulnerability from cvelistv5 – Published: 2020-11-18 17:40 – Updated: 2024-11-13 17:40
VLAI
Title
Cisco Telepresence CE Software and RoomOS Software Unauthorized Token Generation Vulnerability
Summary
A vulnerability in the xAPI service of Cisco Telepresence CE Software and Cisco RoomOS Software could allow an authenticated, remote attacker to generate an access token for an affected device. The vulnerability is due to insufficient access authorization. An attacker could exploit this vulnerability by using the xAPI service to generate a specific token. A successful exploit could allow the attacker to use the generated token to enable experimental features on the device that should not be available to users.
Severity
5.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
URL Tags
https://tools.cisco.com/security/center/content/C… vendor-advisoryx_refsource_CISCO
Impacted products
Date Public
2020-11-18 00:00
Show details on NVD website
To clipboard 

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CVE-2020-16240 (GCVE-0-2020-16240)

Vulnerability from cvelistv5 – Published: 2020-09-23 13:06 – Updated: 2024-08-04 13:37
VLAI
Summary
GE Digital APM Classic, Versions 4.4 and prior. An insecure direct object reference (IDOR) vulnerability allows user account data to be downloaded in JavaScript object notation (JSON) format by users who should not have access to such functionality. An attacker can download sensitive data related to user accounts without having the proper privileges.
Severity
No CVSS data available.
CWE
  • CWE-639 - AUTHORIZATION BYPASS THROUGH USER-CONTROLLED KEY CWE-639
Assigner
References
Impacted products
Vendor Product Version
n/a GE Digital APM Classic Affected: Versions 4.4 and prior
Show details on NVD website
To clipboard 

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CVE-2020-8297 (GCVE-0-2020-8297)

Vulnerability from cvelistv5 – Published: 2021-02-23 18:28 – Updated: 2024-08-04 09:56
VLAI
Summary
Nextcloud Deck before 1.0.2 suffers from an insecure direct object reference (IDOR) vulnerability that permits users with a duplicate user identifier to access deck data of a previous deleted user.
Severity
No CVSS data available.
CWE
  • CWE-639 - Insecure Direct Object Reference (IDOR) (CWE-639)
Assigner
References
Impacted products
Vendor Product Version
n/a Nextcloud Deck Affected: Fixed in 1.0.2
Show details on NVD website
To clipboard 

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CVE-2020-8235 (GCVE-0-2020-8235)

Vulnerability from cvelistv5 – Published: 2020-10-05 13:16 – Updated: 2024-08-04 09:56
VLAI
Summary
Missing access control in Nextcloud Deck 1.0.4 caused an insecure direct object reference allowing an attacker to view all attachments.
Severity
No CVSS data available.
CWE
  • CWE-639 - Insecure Direct Object Reference (IDOR) (CWE-639)
Assigner
References
Impacted products
Vendor Product Version
n/a Nextcloud Deck app Affected: Fixed in 1.0.5
Show details on NVD website
To clipboard 

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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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