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.

2790 vulnerabilities reference this CWE, most recent first.

CVE-2026-86111 (GCVE-0-2026-86111)

Vulnerability from cvelistv5 – Published: 2026-09-05 09:59 – Updated: 2026-09-24 14:20
VLAI
Title
BookWyrm through 0.9.1 Insecure Direct Object Reference in EditStatus Exposes Followers-Only and Direct Statuses
Summary
BookWyrm through 0.9.1 fails to validate user visibility permissions in the status edit endpoint, allowing authenticated attackers to read followers-only and direct-message reviews by enumerating sequential status IDs. Attackers can access the raw content of restricted statuses through the edit view, bypassing the privacy protections documented for these message types.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:07 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
bookwyrm-social bookwyrm Affected: 0 , ≤ 0.9.1 (semver)
    cpe:2.3:a:joinbookwyrm:bookwyrm:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-04 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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CVE-2026-85923 (GCVE-0-2026-85923)

Vulnerability from cvelistv5 – Published: 2026-11-10 18:16 – Updated: 2026-11-10 23:48
VLAI
Title
Azure DevOps Server Elevation of Privilege Vulnerability
Summary
Authorization bypass through user-controlled key in Azure DevOps Server allows an authorized attacker to elevate privileges over a network.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
microsoft CNA
References
Impacted products
Vendor Product Version
Microsoft Azure DevOps Server Affected: 1.0.0 , < Patch 10 (custom)
    cpe:2.3:a:microsoft:azure_devops_server:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-11-10 16:00
Show details on NVD website
To clipboard 

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CVE-2026-85873 (GCVE-0-2026-85873)

Vulnerability from cvelistv5 – Published: 2026-10-13 19:01 – Updated: 2026-11-10 20:43
VLAI
Title
Skype for Business Elevation of Privilege Vulnerability
Summary
Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-13 20:05 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
microsoft CNA
References
Impacted products
Date Public
2026-10-13 14:00
Show details on NVD website
To clipboard 

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CVE-2026-85749 (GCVE-0-2026-85749)

Vulnerability from cvelistv5 – Published: 2026-10-28 22:37 – Updated: 2026-10-29 14:46
VLAI
Title
MailWatch: IDOR lets any authenticated user release or delete another tenant's quarantined mail
Summary
MailWatch for MailScanner is a web-based front-end to MailScanner. Prior to 1.2.27, any authenticated MailWatch user, including the U/user, D/domain-admin, and H/host roles, can release to inbox or permanently delete the quarantined mail of any other user or domain by supplying an arbitrary message `id` to `mailscanner/quarantine_action.php`. The action path calls `quarantine_list_items()` in `mailscanner/functions.php`, which selects from `maillog` by the supplied identifier without the per-role `global_filter` applied by listing and read views. The action requires a valid session and CSRF token, but the caller can submit a token from the caller's own session; ownership of the requested message is never checked. Message identifiers are enumerable, allowing a low-privilege user to invoke `quarantine_release()` or `quarantine_delete()` for other users' or domains' quarantined messages, force-delivering mail held by the quarantine or permanently deleting it. This issue is fixed in version 1.2.27.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-29 14:46 UTC
CWE
  • CWE-566 - Authorization Bypass Through User-Controlled SQL Primary Key
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
mailwatch MailWatch Affected: < 1.2.27
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-85712 (GCVE-0-2026-85712)

Vulnerability from cvelistv5 – Published: 2026-11-06 21:07 – Updated: 2026-11-09 13:27
VLAI
Title
Chartbrew: Cross-tenant project takeover via body.team_id in /project routes
Summary
Chartbrew is an open-source web application that can connect directly to databases and APIs and use the data to create charts. Prior to 5.2.3, the shared project permission check trusted a caller-controlled team_id and let the teamOwner/teamAdmin branch continue without confirming that the target project belonged to that team. The vulnerable surface is project routes and related authorization checks that accepted user-controlled project identifiers. An authenticated user who is an owner or admin of their own team submits a victim project id together with the attacker's own team_id in the request body; default self-signup grants the required role on the user's own team. Authorization is evaluated against the attacker-selected team instead of the target project's team, and the update path mass-assigns the request body without a project field allow-list. The attacker needs a valid Chartbrew account, an owner or admin role on their own team, and a victim project identifier; requests without the body team_id trick are rejected. The attacker can re-parent the victim project into their own team, gain full read and write access, expose it publicly, remove password protection, and cause the victim to lose it; the shared delete route also permits cross-tenant deletion. This issue is fixed in version 5.2.3.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-09 13:27 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
chartbrew chartbrew Affected: < 5.2.3
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-85693 (GCVE-0-2026-85693)

Vulnerability from cvelistv5 – Published: 2026-09-04 14:32 – Updated: 2026-09-14 19:33
VLAI
Title
Chatbot UI Cross-User Private File Content Disclosure via Retrieval API
Summary
Chatbot UI contains an authorization bypass vulnerability in the retrieval endpoint that allows authenticated attackers to access private file content belonging to other users by supplying arbitrary file UUIDs. The endpoint uses a service-role Supabase client that bypasses row-level security and fails to validate file ownership, enabling attackers to retrieve indexed content chunks from victim files through crafted POST requests.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:20 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
mckaywrigley chatbot-ui Affected: 0 , ≤ 81328b61d2a4ab597a7a057be70e785cf756d9f8 (git)
Create a notification for this product.
Date Public
2026-06-12 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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CVE-2026-85638 (GCVE-0-2026-85638)

Vulnerability from cvelistv5 – Published: 2026-09-04 18:45 – Updated: 2026-09-11 20:37
VLAI
Title
jofpin trape user.py authorization
Summary
A weakness has been identified in jofpin trape 2.0. This affects an unknown part of the file core/user.py. This manipulation of the argument vId/id causes authorization bypass. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-11 20:03 UTC
CWE
Assigner
VulDB CNA
References
URL Tags
https://vuldb.com/vuln/398786 vdb-entrytechnical-description
https://vuldb.com/vuln/398786/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-85638 third-party-advisory
https://vuldb.com/submit/895139 third-party-advisory
https://github.com/jofpin/trape/issues/407 exploitissue-tracking
https://github.com/jofpin/trape/ product
Impacted products
Vendor Product Version
jofpin trape Affected: 2.0
    cpe:2.3:a:jofpin:trape:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
GalaxynX (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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CVE-2026-85624 (GCVE-0-2026-85624)

Vulnerability from cvelistv5 – Published: 2026-09-04 14:32 – Updated: 2026-09-04 17:55
VLAI
Title
Blinko 1.8.7 Cross-User Private Note Disclosure via noteReferenceList
Summary
Blinko 1.8.7 contains a cross-user private note disclosure vulnerability in the noteReferenceList procedure that performs no ownership verification on supplied note identifiers. Authenticated attackers can enumerate sequential note IDs and retrieve complete content of other users' private notes including attachments and tags.
Severity
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 17:54 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
blinkospace blinko Affected: 0 , ≤ 1.8.8 (custom)
    cpe:2.3:a:blinko:blinko:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-07-06 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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CVE-2026-85617 (GCVE-0-2026-85617)

Vulnerability from cvelistv5 – Published: 2026-09-04 11:30 – Updated: 2026-09-14 19:33
VLAI
Title
snipe-it before 8.6.3 Authorization Bypass via Bulk Delete
Summary
snipe-it versions before 8.6.3 contain an authorization bypass vulnerability in the bulk delete functionality that allows restricted users to soft-delete users outside their authorized scope. Attackers can include unauthorized user IDs in bulk delete requests to bypass instance-level restrictions and modify or disable accounts they should not access.
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
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:19 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
grokability snipe-it Affected: 0 , < 8.6.3 (semver)
Unaffected: 8.6.3 (semver)
    cpe:2.3:a:snipeitapp:snipe-it:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-11 00:00
Credits
Rajib-Mahmud snipe
Show details on NVD website
To clipboard 

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CVE-2026-85616 (GCVE-0-2026-85616)

Vulnerability from cvelistv5 – Published: 2026-09-04 11:30 – Updated: 2026-09-04 18:01
VLAI
Title
Snipe-IT before 8.6.2 Authorization Bypass via Checkout-Acceptance
Summary
Snipe-IT versions before 8.6.2 contain an authorization bypass vulnerability in checkout-acceptance report actions when Full Multiple Company Support is enabled. Authenticated users with reports.view permission can enumerate sequential acceptance IDs and soft-delete or trigger reminder emails for acceptances belonging to other companies by exploiting a null check on the legacy users.company_id column.
Severity
8.4 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L
8.5 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-04 18:01 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
grokability snipe-it Affected: 8.6.1 , < 8.6.2 (semver)
Unaffected: 8.6.2 (semver)
    cpe:2.3:a:snipeitapp:snipe-it:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-07-20 00:00
Credits
khoadb175
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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