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Vulnerability Details :

CVE-2026-44557

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-15 May, 2026 | 19:44
Updated At-15 May, 2026 | 19:44
Rejected At-
Credits

Open WebUI: Global Knowledge Base Enumeration via knowledge-bases Meta-Collection

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the _validate_collection_access function uses an incomplete allowlist that only enforces ownership checks for collections matching user-memory-* and file-* patterns. All other collection names pass through unchecked — including the system-level knowledge-bases meta-collection, which stores the IDs, names, and descriptions of every knowledge base on the instance. Any authenticated user can query this meta-collection directly via the retrieval query endpoints to obtain a global index of all knowledge bases across all users. This vulnerability is fixed in 0.9.0.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:15 May, 2026 | 19:44
Updated At:15 May, 2026 | 19:44
Rejected At:
▼CVE Numbering Authority (CNA)
Open WebUI: Global Knowledge Base Enumeration via knowledge-bases Meta-Collection

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the _validate_collection_access function uses an incomplete allowlist that only enforces ownership checks for collections matching user-memory-* and file-* patterns. All other collection names pass through unchecked — including the system-level knowledge-bases meta-collection, which stores the IDs, names, and descriptions of every knowledge base on the instance. Any authenticated user can query this meta-collection directly via the retrieval query endpoints to obtain a global index of all knowledge bases across all users. This vulnerability is fixed in 0.9.0.

Affected Products
Vendor
open-webui
Product
open-webui
Versions
Affected
  • < 0.9.0
Problem Types
TypeCWE IDDescription
CWECWE-863CWE-863: Incorrect Authorization
Type: CWE
CWE ID: CWE-863
Description: CWE-863: Incorrect Authorization
Metrics
VersionBase scoreBase severityVector
3.14.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Version: 3.1
Base score: 4.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/open-webui/open-webui/security/advisories/GHSA-6c2x-gcp3-gp73
x_refsource_CONFIRM
Hyperlink: https://github.com/open-webui/open-webui/security/advisories/GHSA-6c2x-gcp3-gp73
Resource:
x_refsource_CONFIRM
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:15 May, 2026 | 20:16
Updated At:15 May, 2026 | 20:16

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the _validate_collection_access function uses an incomplete allowlist that only enforces ownership checks for collections matching user-memory-* and file-* patterns. All other collection names pass through unchecked — including the system-level knowledge-bases meta-collection, which stores the IDs, names, and descriptions of every knowledge base on the instance. Any authenticated user can query this meta-collection directly via the retrieval query endpoints to obtain a global index of all knowledge bases across all users. This vulnerability is fixed in 0.9.0.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.14.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 4.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-863Primarysecurity-advisories@github.com
CWE ID: CWE-863
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/open-webui/open-webui/security/advisories/GHSA-6c2x-gcp3-gp73security-advisories@github.com
N/A
Hyperlink: https://github.com/open-webui/open-webui/security/advisories/GHSA-6c2x-gcp3-gp73
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
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Published-05 Aug, 2022 | 15:12
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

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Incorrect Authorization
CVE-2022-1193
Matching Score-4
Assigner-GitLab Inc.
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Assigner-GitLab Inc.
CVSS Score-4.3||MEDIUM
EPSS-0.14% / 33.53%
||
7 Day CHG~0.00%
Published-11 Apr, 2022 | 19:38
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Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Improper access control in GitLab CE/EE versions 10.7 prior to 14.7.7, 14.8 prior to 14.8.5, and 14.9 prior to 14.9.2 allows a malicious actor to obtain details of the latest commit in a private project via Merge Requests under certain circumstances

Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-863
Incorrect Authorization
CVE-2022-1124
Matching Score-4
Assigner-GitLab Inc.
ShareView Details
Matching Score-4
Assigner-GitLab Inc.
CVSS Score-4.3||MEDIUM
EPSS-0.24% / 47.79%
||
7 Day CHG~0.00%
Published-11 May, 2022 | 14:50
Updated-02 Aug, 2024 | 23:55
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An improper authorization issue has been discovered in GitLab CE/EE affecting all versions prior to 14.8.6, all versions from 14.9.0 prior to 14.9.4, and 14.10.0, allowing Guest project members to access trace log of jobs when it is enabled

Action-Not Available
Vendor-GitLab Inc.
Product-gitlabGitLab
CWE ID-CWE-863
Incorrect Authorization
CVE-2021-44465
Matching Score-4
Assigner-Odoo
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Matching Score-4
Assigner-Odoo
CVSS Score-4.3||MEDIUM
EPSS-0.15% / 35.73%
||
7 Day CHG~0.00%
Published-25 Apr, 2023 | 18:33
Updated-03 Feb, 2025 | 18:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Improper access control in Odoo Community 13.0 and earlier and Odoo Enterprise 13.0 and earlier allows authenticated attackers to subscribe to receive future notifications and comments related to arbitrary business records in the system, via crafted RPC requests.

Action-Not Available
Vendor-odooOdoo
Product-odooOdoo CommunityOdoo Enterprise
CWE ID-CWE-284
Improper Access Control
CWE ID-CWE-863
Incorrect Authorization
CVE-2021-43553
Matching Score-4
Assigner-Cybersecurity and Infrastructure Security Agency (CISA) Industrial Control Systems (ICS)
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Matching Score-4
Assigner-Cybersecurity and Infrastructure Security Agency (CISA) Industrial Control Systems (ICS)
CVSS Score-3.1||LOW
EPSS-0.12% / 30.30%
||
7 Day CHG~0.00%
Published-17 Nov, 2021 | 18:20
Updated-16 Sep, 2024 | 19:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
OSIsoft PI Vision

PI Vision could disclose information to a user with insufficient privileges for an AF attribute that is the child of another attribute and is configured as a Limits property.

Action-Not Available
Vendor-osisoftOSIsoft
Product-pi_visionPI Vision
CWE ID-CWE-863
Incorrect Authorization
CVE-2025-2424
Matching Score-4
Assigner-Mattermost, Inc.
ShareView Details
Matching Score-4
Assigner-Mattermost, Inc.
CVSS Score-3.1||LOW
EPSS-0.14% / 33.33%
||
7 Day CHG~0.00%
Published-14 Apr, 2025 | 14:49
Updated-01 Oct, 2025 | 18:18
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Leaked Metadata of Deleted Files via Bookmark Creation

Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to check if a file has been deleted when creating a bookmark which allows an attacker who knows the IDs of deleted files to obtain metadata of the files via bookmark creation.

Action-Not Available
Vendor-Mattermost, Inc.
Product-mattermost_serverMattermost
CWE ID-CWE-863
Incorrect Authorization
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