Common Weakness Enumeration
CWE-639
AllowedAuthorization 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.
3201 vulnerabilities reference this CWE, most recent first.
CVE-2026-56780 (GCVE-0-2026-56780)
Vulnerability from cvelistv5 – Published: 2026-06-29 17:14 – Updated: 2026-07-01 14:06 X_Open Source
VLAI
EPSS
VEX
Title
Modoboa < 2.9.0 - Insecure Direct Object Reference in Account Password Change API
Summary
Modoboa before 2.9.0 contains an insecure direct object reference vulnerability in the PUT /api/v1/accounts/{pk}/password/ endpoint that allows domain administrators to change any user's password. Attackers with domain admin privileges can bypass object-level access controls to reset superadmin passwords and achieve full account takeover.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/modoboa/modoboa/pull/4038 | issue-tracking |
| https://github.com/modoboa/modoboa/commit/a1878c4… | patch |
| https://www.vulncheck.com/advisories/modoboa-inse… | third-party-advisory |
Impacted products
Date Public
2026-05-27 00:00
Credits
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CVE-2026-56774 (GCVE-0-2026-56774)
Vulnerability from cvelistv5 – Published: 2026-06-25 18:10 – Updated: 2026-07-14 21:34 X_Open Source
VLAI
EPSS
VEX
Title
Kanboard - Cross-User Deletion of Persistent Login Sessions via Unvalidated Session ID
Summary
Kanboard through 1.2.52, fixed in commit 928c68a, UserViewController::removeSession fails to validate the session id parameter before passing it to RememberMeSessionModel::remove, allowing authenticated users to delete other users' Remember Me sessions. Attackers can enumerate sequential session IDs and mass-invalidate persistent login sessions of any user, including administrators, forcing re-authentication and causing denial of service.
Severity
5.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/kanboard/kanboard/issues/5829 | technical-descriptionexploit |
| https://github.com/kanboard/kanboard/pull/5831 | issue-tracking |
| https://github.com/kanboard/kanboard/commit/928c6… | patch |
| https://www.vulncheck.com/advisories/kanboard-cro… | third-party-advisory |
Impacted products
Date Public
2026-06-04 00:00
Credits
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CVE-2026-56772 (GCVE-0-2026-56772)
Vulnerability from cvelistv5 – Published: 2026-06-25 18:08 – Updated: 2026-07-14 21:34 X_Open Source
VLAI
EPSS
VEX
Title
NewsBlur < 14.5.0 - Insecure Direct Object Reference in Social Interactions Endpoint
Summary
NewsBlur before 14.5.0 contains a broken access control vulnerability that allows authenticated users to read private notification feeds by supplying arbitrary user_id values to the GET /social/interactions endpoint without ownership verification. Attackers can enumerate user_id values to access another user's follows, replies, and social activity without authorization.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/samuelclay/NewsBlur/releases/t… | release-notes |
| https://github.com/samuelclay/NewsBlur/commit/613… | patch |
| https://www.vulncheck.com/advisories/newsblur-ins… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| samuelclay | NewsBlur |
Affected:
0 , < 14.5.0
(semver)
|
Date Public
2026-06-02 00:00
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CVE-2026-56765 (GCVE-0-2026-56765)
Vulnerability from cvelistv5 – Published: 2026-07-10 13:57 – Updated: 2026-07-10 17:00
VLAI
EPSS
VEX
Title
Vikunja - Unauthenticated Instance-Wide Data Breach via Link Share Hash Disclosure Chained with Cross-Project Attachment IDOR
Summary
Vikunja before 2.2.1 contains an authorization flaw where the LinkSharing.ReadAll endpoint exposes share hashes to users with read access, enabling permission escalation to admin-level shares. The GetTaskAttachment endpoint performs permission checks against user-supplied task IDs but fetches attachments by sequential ID without verifying ownership, allowing attackers to download and delete all file attachments across all projects instance-wide.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/go-vikunja/vikunja/security/ad… | vendor-advisory |
| https://www.vulncheck.com/advisories/vikunja-unau… | third-party-advisory |
Impacted products
Date Public
2026-03-23 00:00
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CVE-2026-56424 (GCVE-0-2026-56424)
Vulnerability from cvelistv5 – Published: 2026-06-22 12:17 – Updated: 2026-06-23 14:19
VLAI
EPSS
VEX
Title
Broken access control in MISP core allows cross-organization unauthorized modification or deletion of analyst data, event reports, collections, templates, and decaying models
Summary
MISP core contained multiple broken access-control flaws where authorization checks were performed against the wrong entity, or where ownership/editability checks were missing on write paths. In affected subsystems, a lower-privileged authenticated user with the relevant feature permission could cause the application to authorize one object but mutate another, or could modify objects that were merely visible rather than editable by the user’s organization.
The affected paths included:
* Event Reports tag removal: the route-authorized report could differ from the report ID used for tag detachment, enabling cross-organization tag removal from another event report
* Collection Elements bulk deletion: bulk deletion authorized against a collection whose ID matched the collection-element row ID, rather than the element’s actual parent collection, enabling deletion of elements from collections the user did not own.
* Analyst Data capture/update: nested analyst data updates could overwrite an existing record without applying the normal canEditAnalystData ownership check, enabling cross-organization overwrite of analyst data records.
* Template Elements editing: editing authorized against a template whose ID matched the template-element ID, rather than the element’s actual parent template, enabling unauthorized edits to another organization’s template elements.
* Decaying Model editing and mappings: write paths loaded models using view-scope access but did not verify edit ownership, enabling users to edit or remap visible models owned by another organization.
Successful exploitation could allow an authenticated user with subsystem-specific permissions to perform unauthorized cross-organization modifications or deletions of MISP data, resulting in integrity loss, unauthorized tampering with shared intelligence, and disruption of analyst workflows.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
Credits
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CVE-2026-56422 (GCVE-0-2026-56422)
Vulnerability from cvelistv5 – Published: 2026-06-22 11:43 – Updated: 2026-06-23 05:58
VLAI
EPSS
VEX
Title
MISP Core: Mass Assignment and Object Re-ownership via Unvalidated Request Fields
Summary
Multiple MISP core controllers and model capture paths accepted client-controlled request fields such as primary keys (id) and ownership/scope foreign keys (event_id, org_id, user_id, sharing_group_id, galaxy_cluster_uuid, organisation_uuid, and related nested object identifiers) without consistently stripping, pinning, or revalidating them against the server-authorized object.
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
16 references
Credits
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CVE-2026-56385 (GCVE-0-2026-56385)
Vulnerability from cvelistv5 – Published: 2026-06-21 13:27 – Updated: 2026-06-22 12:18
VLAI
EPSS
VEX
Title
Craft CMS - Authorization Bypass in assets/preview-file Endpoint
Summary
Craft CMS versions >= 5.0.0-RC1, <= 5.9.13 and >= 4.0.0-RC1, <= 4.17.7 contain an authorization bypass in the assets/preview-file endpoint. The action does not enforce per-asset view authorization before returning preview content, allowing an authenticated low-privileged user to supply a controlled assetId for an asset they are not permitted to view and still receive preview response data (previewHtml), including a private preview image route containing the target private assetId. Fixed in 5.9.14 and 4.17.8.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/craftcms/cms/security/advisori… | vendor-advisory |
| https://github.com/craftcms/cms/commit/d30df31122… | patch |
| https://www.vulncheck.com/advisories/craft-cms-au… | third-party-advisory |
Impacted products
Date Public
2026-03-24 00:00
Credits
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CVE-2026-56230 (GCVE-0-2026-56230)
Vulnerability from cvelistv5 – Published: 2026-06-30 22:08 – Updated: 2026-07-01 14:28
VLAI
EPSS
VEX
Title
Capgo - Broken Object Level Authorization via x-limited-key-id Header
Summary
Capgo before 12.128.2 contains a broken object level authorization vulnerability in middlewareKey() that accepts the client-controlled x-limited-key-id header without validating ownership, allowing authenticated users to adopt cross-tenant limited keys. Attackers can supply another tenant's limited key ID to bypass authorization checks and access unauthorized cross-tenant resources across multiple API endpoints.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-broken… | third-party-advisory |
Impacted products
Date Public
2026-02-10 00:00
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CVE-2026-56229 (GCVE-0-2026-56229)
Vulnerability from cvelistv5 – Published: 2026-06-21 13:26 – Updated: 2026-06-22 10:54
VLAI
EPSS
VEX
Title
Capgo - Cross-App Build Job Access via app_id/job_id Mismatch in /build/status and /build/logs
Summary
Capgo before 12.128.2 contains an authorization bypass vulnerability in the /build/status and /build/logs endpoints that allows attackers to access build jobs belonging to different applications by supplying a mismatched app_id and job_id combination. Limited API keys restricted to a single app can retrieve build status and logs from other apps by providing an authorized app_id while using a job_id from an unauthorized app, exposing sensitive build information including logs, metadata, and potentially credentials.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-cross-… | third-party-advisory |
Impacted products
Date Public
2026-02-10 00:00
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CVE-2026-56222 (GCVE-0-2026-56222)
Vulnerability from cvelistv5 – Published: 2026-06-23 12:12 – Updated: 2026-06-24 14:59
VLAI
EPSS
VEX
Title
Capgo - Cross-Organization App Takeover via Mismatched org_id and app_id in /private/role_bindings
Summary
Capgo before 12.128.2 contains an authorization bypass vulnerability in POST /private/role_bindings that fails to verify app_id ownership during app-scoped role binding creation. An attacker with administrative privileges in one organization can create role bindings targeting applications owned by other organizations, enabling unauthorized read and modification of victim applications.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Cap-go/capgo/security/advisori… | vendor-advisory |
| https://www.vulncheck.com/advisories/capgo-cross-… | third-party-advisory |
Impacted products
Date Public
2026-05-07 00:00
Credits
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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.