Common Weakness Enumeration

CWE-639

Allowed

Authorization Bypass Through User-Controlled Key

Abstraction: Base · Status: Incomplete

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.

5180 vulnerabilities reference this CWE, most recent first.

CVE-2026-110724 (GCVE-0-2026-110724)

Vulnerability from cvelistv5 – Published: 2026-10-15 12:11 – Updated: 2026-10-16 18:43
VLAI
Summary
In `api-gateway` versions till `1.7.3`, The default rate-limit key resolver, `ClientIpKeyResolver`, derives the per-client bucket key from the leftmost element of the `X-Forwarded-For` request header. That element is supplied by the originating HTTP client and is not validated against any trusted-proxy list. A single attacker can therefore obtain an unlimited number of independent rate-limit buckets — one per unique header value — and completely bypass the gateway's request-rate limiting on every route that uses the shipped default configuration.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 18:43 UTC
Assigner
eclipse CNA under the mitre root
CNA scorecard C 63/100 over 153 records in the last 180 days details
Impacted products
Show details on NVD website

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CVE-2026-110620 (GCVE-0-2026-110620)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-14 14:16
VLAI
Title
Formbricks before 4.9.0 Cross-Organization IDOR in Server Actions via organizationId
Summary
Formbricks before 4.9.0 contains an authorization bypass vulnerability in server actions like resetSurveyAction and updateSegmentAction that fail to verify resource ownership against the supplied organizationId. Authenticated owners or managers of any organization can pair their own organization identifier with victim resource IDs to delete survey responses, modify segments and quotas, or alter pending invitations.
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6516 records in the last 180 days details
Impacted products
Vendor Product Version
formbricks formbricks Affected: 0 , < 4.9.0 (semver)
Create a notification for this product.
Date Public
2026-02-21 00:00
Show details on NVD website

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CVE-2026-110613 (GCVE-0-2026-110613)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-16 17:16
VLAI
Title
youlai-mall through commit 9f62de8 Order Information Disclosure via App Order List
Summary
youlai-mall through commit 9f62de8 contains a missing authorization vulnerability that allows authenticated members to view every customer's orders via the app order list endpoint. Attackers can page through the oms_order table using a self-registered account to read order ids, order_sn values, member ids, payment amounts, and order status.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 16:31 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6516 records in the last 180 days details
Impacted products
Vendor Product Version
youlaitech youlai-mall Affected: de86041995fa3a8b1e959b86232cb9f0bf52ff46 , ≤ 9f62de811d478b3ab6b27438efd58e2c4fdb4c31 (git)
Create a notification for this product.
Date Public
2026-10-14 00:00
Show details on NVD website

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CVE-2026-110611 (GCVE-0-2026-110611)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-20 01:10
VLAI
Title
REBUILD through 4.5.0 Authorization Bypass via aibot2 Chat Endpoints chatid
Summary
REBUILD through 4.5.0 contains an authorization bypass vulnerability in AiBot2Controller /aibot2 endpoints that act on a caller-supplied chatid without verifying ownership. Authenticated low-privilege users can supply another user's chatid to chat-init, chat-delete, chat-feedback, or chat-stream-stop to read, delete, exfiltrate, or interrupt AI assistant conversations.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 01:08 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6516 records in the last 180 days details
Impacted products
Vendor Product Version
getrebuild rebuild Affected: 0 , ≤ 4.5.0 (semver)
    cpe:2.3:a:getrebuild:rebuild:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-10-14 00:00
Show details on NVD website

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CVE-2026-110608 (GCVE-0-2026-110608)

Vulnerability from cvelistv5 – Published: 2026-10-14 14:16 – Updated: 2026-10-16 17:16
VLAI
Title
BizSpring Shop through commit cf22d39daaf1 IDOR via /member/order Cancel and Receive
Summary
BizSpring Shop through commit cf22d39daaf1 contains an insecure direct object reference vulnerability in the OrderController cancel and receive handlers that allows authenticated members to act on other members' orders by supplying their orderId. Attackers can cancel victims' pending orders to release allocated stock or confirm receipt of shipped orders, advancing fulfilment and settlement without the victim's consent.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 16:31 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6516 records in the last 180 days details
Impacted products
Vendor Product Version
BizSpring BizSpring Shop Affected: 0 , ≤ cf22d39daaf17f430d8fc1fb698a2f6e515e1808 (git)
Create a notification for this product.
BizSpring BizSpring Java Mall Affected: 0 , ≤ 369e88c5cda36ddcea56742c335ee1bfe50e8156 (git)
Create a notification for this product.
Date Public
2026-10-14 00:00
Show details on NVD website

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CVE-2026-110494 (GCVE-0-2026-110494)

Vulnerability from cvelistv5 – Published: 2026-10-18 18:57 – Updated: 2026-10-19 20:20
VLAI
Title
Gitea release attachment re-linking of issue attachments
Summary
Adding attachments to a release checked the repository and release of an attachment but not whether it was already linked to an issue or comment. A user with write access to the releases of a repository, who knew the UUID of an attachment in that repository, could link it to a release. This exposed the file name, size and download count of the attachment through the release and allowed the user to rename or delete it.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 20:20 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Gitea CNA under the mitre root
CNA scorecard C 61/100 over 165 records in the last 180 days details
Impacted products
Vendor Product Version
Gitea Gitea Affected: 0 , ≤ 28.1.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-110467 (GCVE-0-2026-110467)

Vulnerability from cvelistv5 – Published: 2026-10-14 06:31 – Updated: 2026-10-16 15:31
VLAI
Title
WisdomGarden|Tronclass - Insecure Direct Object Reference
Summary
Tronclass developed by WisdomGarden has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify a specific parameter to view the peer review scores of any student.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:17 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
twcert CNA under the mitre root
CNA scorecard B 81/100 over 94 records in the last 180 days details
References
Impacted products
Vendor Product Version
WisdomGarden Tronclass Affected: 1.77 (custom)
Affected: 1.78 (custom)
Create a notification for this product.
Date Public
2026-10-14 06:30
Show details on NVD website

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CVE-2026-110465 (GCVE-0-2026-110465)

Vulnerability from cvelistv5 – Published: 2026-10-14 06:28 – Updated: 2026-10-14 16:01
VLAI
Title
WisdomGarden|Tronclass - Insecure Direct Object Reference
Summary
Tronclass developed by WisdomGarden has a Insecure Direct Object Reference vulnerability. Authenticated remote attackers can modify a specific parameter to alter the peer review scores of any student.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-14 16:00 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
twcert CNA under the mitre root
CNA scorecard B 81/100 over 94 records in the last 180 days details
References
Impacted products
Vendor Product Version
WisdomGarden Tronclass Affected: 1.77 (custom)
Affected: 1.78 (custom)
Create a notification for this product.
Date Public
2026-10-14 06:27
Show details on NVD website

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CVE-2026-110383 (GCVE-0-2026-110383)

Vulnerability from cvelistv5 – Published: 2026-10-18 11:00 – Updated: 2026-10-18 11:42 X_Open Source
VLAI
Title
WordPress Electronic Signature Add-on for Fluent Forms plugin <= 2.0.5 - Insecure Direct Object References (IDOR) vulnerability
Summary
Authorization Bypass Through User-Controlled Key vulnerability in WP E-Signature Electronic Signature Add-on for Fluent Forms signature-fluent-contract-forms-add-on allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Electronic Signature Add-on for Fluent Forms: from n/a through 2.0.5.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-18 11:22 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2953 records in the last 180 days details
References
Impacted products
Date Public
2026-10-16 10:37
Show details on NVD website

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CVE-2026-110381 (GCVE-0-2026-110381)

Vulnerability from cvelistv5 – Published: 2026-10-15 17:48 – Updated: 2026-10-16 17:12 X_Open Source
VLAI
Title
WordPress Simply Schedule Appointments plugin <= 1.6.12.35 - Insecure Direct Object References (IDOR) vulnerability
Summary
Authorization Bypass Through User-Controlled Key vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Simply Schedule Appointments: from n/a through 1.6.12.35.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 20:24 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
Patchstack CNA under the mitre root
CNA scorecard C 75/100 over 2953 records in the last 180 days details
References
Impacted products
Vendor Product Version
NSquared Simply Schedule Appointments Affected: 0 , ≤ 1.6.12.35 (custom)
Create a notification for this product.
Date Public
2026-10-15 17:47
Show details on NVD website

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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.