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CWE-862
Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-44562 (GCVE-0-2026-44562)
Vulnerability from cvelistv5 – Published: 2026-05-15 19:30 – Updated: 2026-05-15 22:21
VLAI
Title
Open WebUI: Model Import Overwrites Any Model Without Ownership Check
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the POST /api/v1/models/import endpoint allows users with the workspace.models_import permission to overwrite any existing model in the database, regardless of ownership. When an imported model's ID matches an existing model, the endpoint merges the attacker's payload over the existing model data and writes it to the database with no ownership or access grant validation. Additionally, filter_allowed_access_grants is never called, bypassing the access grant restrictions enforced on all other model mutation endpoints. This vulnerability is fixed in 0.9.0.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/open-webui/open-webui/security… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-webui | open-webui |
Affected:
< 0.9.0
|
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CVE-2026-44563 (GCVE-0-2026-44563)
Vulnerability from cvelistv5 – Published: 2026-05-15 19:28 – Updated: 2026-05-18 14:32
VLAI
Title
Open WebUI: Ollama Model Access Control Bypass via /api/generate, /api/embed, /api/embeddings, and /api/show
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the /api/generate, /api/embed, /api/embeddings, and /api/show endpoints accept any model name from the user and forward the request to the Ollama backend without checking whether the user is authorized to access that model. These endpoints only require get_verified_user (any authenticated non-pending user) and validate that the model exists in the full unfiltered model list, but never check AccessGrants.has_access(). This vulnerability is fixed in 0.9.0.
Severity
5.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/open-webui/open-webui/security… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-webui | open-webui |
Affected:
< 0.9.0
|
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CVE-2026-44569 (GCVE-0-2026-44569)
Vulnerability from cvelistv5 – Published: 2026-05-15 21:03 – Updated: 2026-05-18 12:48
VLAI
Title
Open WebUI: Insecure Message Access Breaks Authorization
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.19, there's an IDOR in the channels message management system that allows authenticated users to modify or delete any message within channels they have read access to. The vulnerability exists in the message update and delete endpoints, which implement channel-level authorization but completely lack message ownership validation. While the frontend correctly implements ownership checks (showing edit/delete buttons only for message owners or admins), the backend APIs bypass these protections by only validating channel access permissions without verifying that the requesting user owns the target message. This creates a client-side security control bypass where attackers can directly call the APIs to modify other users' messages. This vulnerability is fixed in 0.6.19.
Severity
7.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/open-webui/open-webui/security… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-webui | open-webui |
Affected:
< 0.6.19
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CVE-2026-44571 (GCVE-0-2026-44571)
Vulnerability from cvelistv5 – Published: 2026-05-15 21:24 – Updated: 2026-05-15 22:21
VLAI
Title
Open WebUI: Improper Authorization in Standard Channels Allows Message Updates with Read Permission
Summary
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.6, in standard channels (i.e., channels whose channel.type is neither group nor dm), the endpoint POST /api/v1/channels/{channel_id}/messages/{message_id}/update can be accessed with read permission only. When access_control is set to None, the authorization check has_access(..., type="read") evaluates to True, allowing users who are not the message owner to update messages. As a result, unauthorized modification of other users’ messages is possible. This vulnerability is fixed in 0.8.6.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/open-webui/open-webui/security… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| open-webui | open-webui |
Affected:
< 0.8.6
|
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CVE-2026-44592 (GCVE-0-2026-44592)
Vulnerability from cvelistv5 – Published: 2026-05-14 18:39 – Updated: 2026-05-16 00:50
VLAI
Title
Gradient: Unauthenticated worker on /proto → arbitrary NAR write / cache poisoning
Summary
Gradient is a nix-based continuous integration system. In 1.1.0, when GRADIENT_DISCOVERABLE=true (the default, and the NixOS module default), anyone who can reach /proto can register as a worker without any credentials by sending a fresh, never-registered worker UUID. The resulting session has PeerAuth::Open, i.e. it sees jobs from every organisation, and can immediately NarPush/NarUploaded arbitrary store paths into nar_storage and the cached_path table. This vulnerability is fixed in 1.1.1.
Severity
9.4 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/wavelens/gradient/security/adv… | x_refsource_CONFIRM |
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CVE-2026-44718 (GCVE-0-2026-44718)
Vulnerability from cvelistv5 – Published: 2026-05-15 18:23 – Updated: 2026-05-18 15:36
VLAI
Title
Mathesar: Missing collaborator checks allowed access to saved explorations in other databases
Summary
Mathesar is a web application that makes working with PostgreSQL databases both simple and powerful. From 0.2.0 to before 0.10.0, explorations.get, explorations.replace, and explorations.delete operate on an exploration_id without verifying that the requesting user was a collaborator on the exploration’s database. An authenticated user on the same Mathesar installation who knew or guessed an exploration ID could read, replace, or delete a saved exploration belonging to a database where they were not a collaborator. This affected Mathesar-managed saved exploration definitions, including names, descriptions, selected columns, display metadata, filters, sorting, and transformations. This vulnerability is fixed in 0.10.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/mathesar-foundation/mathesar/s… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mathesar-foundation | mathesar |
Affected:
>= 0.2.0, < 0.10.0
|
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CVE-2026-44719 (GCVE-0-2026-44719)
Vulnerability from cvelistv5 – Published: 2026-05-15 18:24 – Updated: 2026-05-15 19:57
VLAI
Title
Mathesar: Missing collaborator checks allowed access to database-scoped Mathesar metadata
Summary
Mathesar is a web application that makes working with PostgreSQL databases both simple and powerful. From 0.2.0 to before 0.10.0, collaborators.list, tables.metadata.list, explorations.list, and forms.list accept a database_id without verifying that the requesting user was a collaborator on that database. An authenticated user on the same Mathesar installation could use these methods to view Mathesar-managed metadata for databases where they were not a collaborator. Depending on the database and features in use, exposed metadata could include collaborator mappings, table metadata, saved exploration metadata, and form metadata. For forms, the exposed metadata included form tokens. For public forms, possession of the token is equivalent to possession of the public form link, which allows submission to the form under the form’s configured PostgreSQL role. This vulnerability is fixed in 0.10.0.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/mathesar-foundation/mathesar/s… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mathesar-foundation | mathesar |
Affected:
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CVE-2026-44750 (GCVE-0-2026-44750)
Vulnerability from cvelistv5 – Published: 2026-06-09 00:21 – Updated: 2026-06-10 13:35
VLAI
Title
Missing Authorization check in SAP MDG (Review Match Groups Application)
Summary
SAP MDG (Review Match Groups Application) does not perform the necessary authorization checks for authenticated users. This could allow a low-privileged user to perform actions that would otherwise be restricted, resulting in escalation of privileges. This has a low impact on integrity, while confidentiality and availability are not impacted.
Severity
4.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP_SE | SAP MDG (Review Match Groups Application) |
Affected:
S4CORE 108
Affected: SAP_BASIS 916 Affected: SAP_BASIS 917 Affected: SAP_ABA 816 |
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CVE-2026-44751 (GCVE-0-2026-44751)
Vulnerability from cvelistv5 – Published: 2026-06-09 00:21 – Updated: 2026-06-10 13:35
VLAI
Title
Missing Authorization check in Application Server ABAP of SAP NetWeaver and ABAP Platform
Summary
Application server ABAP does not perform necessary authorization checks for an authenticated user allowing an attacker to execute a report generation command which could overwrite information belonging to another user, resulting in escalation of privileges. This has high impact on integrity with low impact on availability and no impact on confidentiality of the application.
Severity
7.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP_SE | SAP NetWeaver AS ABAP and ABAP Platform |
Affected:
SAP_BASIS 700
Affected: SAP_BASIS 701 Affected: SAP_BASIS 702 Affected: SAP_BASIS 731 Affected: SAP_BASIS 740 Affected: SAP_BASIS 750 Affected: SAP_BASIS 751 Affected: SAP_BASIS 752 Affected: SAP_BASIS 753 Affected: SAP_BASIS 754 Affected: SAP_BASIS 755 Affected: SAP_BASIS 756 Affected: SAP_BASIS 757 Affected: SAP_BASIS 758 Affected: SAP_BASIS 816 |
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CVE-2026-44754 (GCVE-0-2026-44754)
Vulnerability from cvelistv5 – Published: 2026-06-09 00:21 – Updated: 2026-06-09 14:33
VLAI
Title
Missing caller identification check-in for ODP Data Replication APIs
Summary
The Remote Function Call (RFC) modules of the Operational Data Provisioning Data Replication API (ODP-RFC) are missing caller identification of permitted SAP-internal applications and are being used by customer or third-party applications in ways that are not aligned with its intended usage. Which could lead to unintended disclosure of data, but does not affect integrity, and poses minimal availability concerns for the application.
Severity
6.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-862 - Missing Authorization
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| SAP_SE | ODP Data Replication APIs |
Affected:
DW4CORE 200
Affected: 300 Affected: 400 Affected: PI_BASIS 2006_1_700 Affected: 701 Affected: 702 Affected: 731 Affected: 740 Affected: SAP_BW 750 Affected: 816 |
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Mitigation
Phase: Architecture and Design
Description:
- Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) [REF-229] to enforce the roles at the appropriate boundaries.
- Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
Mitigation
Phase: Architecture and Design
Description:
- Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor [REF-7].
Mitigation ID: MIT-4.4
Phase: Architecture and Design
Strategy: Libraries or Frameworks
Description:
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, consider using authorization frameworks such as the JAAS Authorization Framework [REF-233] and the OWASP ESAPI Access Control feature [REF-45].
Mitigation
Phase: Architecture and Design
Description:
- For web applications, make sure that the access control mechanism is enforced correctly at the server side on every page. Users should not be able to access any unauthorized functionality or information by simply requesting direct access to that page.
- One way to do this is to ensure that all pages containing sensitive information are not cached, and that all such pages restrict access to requests that are accompanied by an active and authenticated session token associated with a user who has the required permissions to access that page.
Mitigation
Phases: System Configuration, Installation
Description:
- Use the access control capabilities of your operating system and server environment and define your access control lists accordingly. Use a "default deny" policy when defining these ACLs.
CAPEC-665: Exploitation of Thunderbolt Protection Flaws
An adversary leverages a firmware weakness within the Thunderbolt protocol, on a computing device to manipulate Thunderbolt controller firmware in order to exploit vulnerabilities in the implementation of authorization and verification schemes within Thunderbolt protection mechanisms. Upon gaining physical access to a target device, the adversary conducts high-level firmware manipulation of the victim Thunderbolt controller SPI (Serial Peripheral Interface) flash, through the use of a SPI Programing device and an external Thunderbolt device, typically as the target device is booting up. If successful, this allows the adversary to modify memory, subvert authentication mechanisms, spoof identities and content, and extract data and memory from the target device. Currently 7 major vulnerabilities exist within Thunderbolt protocol with 9 attack vectors as noted in the Execution Flow.