Open WebUI: LDAP and OAuth First-User Race Condition Allows Multiple Admin Accounts

Summary The LDAP and OAuth authentication flows use a TOCTOU Time-of-Check-Time-of-Use pattern for first-user admin role assignment. The regular signup handler signuphandler in auths.py, line 663 was explicitly patched to prevent this race with the comment "Insert with default role first to avoid...

GHSA-H3WW-Q6XX-W7X3 Open WebUI: LDAP and OAuth First-User Race Condition Allows Multiple Admin Accounts

Summary The LDAP and OAuth authentication flows use a TOCTOU Time-of-Check-Time-of-Use pattern for first-user admin role assignment. The regular signup handler signuphandler in auths.py, line 663 was explicitly patched to prevent this race with the comment "Insert with default role first to avoid...

GHSA-CQP4-QQVG-3787 Open WebUI has Stored XSS in Banner Component via Improper Sanitization Order

Summary A Stored Cross-Site Scripting XSS vulnerability exists in the Banner component due to an improper sanitization order specifically, DOMPurify is executed before the marked library. This vulnerability allows a compromised or malicious administrator to plant a malicious payload in the global...

Open WebUI has Stored XSS in Banner Component via Improper Sanitization Order

Summary A Stored Cross-Site Scripting XSS vulnerability exists in the Banner component due to an improper sanitization order specifically, DOMPurify is executed before the marked library. This vulnerability allows a compromised or malicious administrator to plant a malicious payload in the global...

Cross-site Scripting (XSS)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Cross-site Scripting XSS via improper sanitization order in the Banner component. An attacker can execute arbitrary JavaScript in the context of privileged users by injecting malicious payloads into the banne...

Insertion of Sensitive Information Into Sent Data

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Insertion of Sensitive Information Into Sent Data through the getmodelbyid handler in routers/models.py. An attacker can read the admin-curated system prompt and other model behavior settings by sending a GET...

Information Exposure

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Information Exposure via the api/models endpoint. An attacker can access sensitive system prompt information by sending authenticated requests as a non-admin user. Remediation Upgrade open-webui to version...

GHSA-JH9G-8JQW-M2QX Open WebUI Exposes System Prompt to Regular User [Non-Admin]

Summary A regular user non-admin can view the system prompt of the model which is set by an admin. Details When a regular user non-admin logs into the application, a http://IP:8080/api/models? web request is initiated by the application and in response, it reveals the system prompt of available...

Open WebUI Exposes System Prompt to Regular User [Non-Admin]

Summary A regular user non-admin can view the system prompt of the model which is set by an admin. Details When a regular user non-admin logs into the application, a http://IP:8080/api/models? web request is initiated by the application and in response, it reveals the system prompt of available...

Open WebUI's chat completion API allows tool restrictions to be bypassed

Summary Open WebUI v0.6.43 contains a vulnerability in its chat completion API, which allows attackers to bypass tool restrictions, potentially enabling unauthorized actions or access. Details In the chatcompletion API, the parameters toolids and toolservers are supplied by the user. These...

GHSA-3VCP-CHFH-F6R2 Default kuma-cp leaks admin token cross-origin via CORS wildcard + LocalhostIsAdmin

Summary Default kuma-cp config leaks the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. CorsAllowedDomains: "." reflects any Origin, and LocalhostIsAdmin: true promotes requests from 127.0.0.1 to mesh-system:admin...

Default kuma-cp leaks admin token cross-origin via CORS wildcard + LocalhostIsAdmin

Summary Default kuma-cp config leaks the admin bootstrap token and signing keys to any webpage the operator visits while the control plane is reachable from their browser. CorsAllowedDomains: "." reflects any Origin, and LocalhostIsAdmin: true promotes requests from 127.0.0.1 to mesh-system:admin...

CVE-2026-42289

ChurchCRM is an open-source church management system. Prior to 7.3.2, UserEditor.php processes user account creation and permission updates entirely through $POST parameters with no CSRF token validation. An unauthenticated attacker can craft a malicious HTML page that, when visited by an...

CVE-2026-44738

Grav is a file-based Web platform. Prior to 2.0.0-rc.2, the Twig sandbox allow-list permits any user with the admin.pages role to call config.toArray from within a page body, dumping the entire merged site configuration — including all plugin secrets SMTP passwords, AWS keys, OAuth client secrets...

CVE-2026-42609

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, a business logic vulnerability in the Grav Admin Panel allows a low-privileged user with only user creation permissions to overwrite existing accounts, including the primary administrator. By creating a new user with a username that alread...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via the StandardEvaluationContext method. An attacker can execute arbitrary code and exfiltrate credentials by supplying crafted Spring Expression Language SpEL expressions as an authenticated user with...

Arbitrary Code Injection

Overview Affected versions of this package are vulnerable to Arbitrary Code Injection via the StandardEvaluationContext method. An attacker can execute arbitrary code and exfiltrate credentials by supplying crafted Spring Expression Language SpEL expressions as an authenticated user with...

CVE-2026-8621

Crabbox prior to v0.12.0 contains an authentication bypass vulnerability that allows non-admin shared-token callers to impersonate other owners or organizations by spoofing identity headers. Attackers can inject malicious X-Crabbox-Owner and X-Crabbox-Org headers in requests authenticated with a...

CVE-2026-27886

Strapi is an open source headless content management system. Strapi versions starting in 4.0.0 and prior to 5.37.0 did not sufficiently sanitize query parameters when filtering content via relational fields. An unauthenticated attacker could use the where query parameter on any publicly-accessibl...

CVE-2026-22707

Strapi is an open source headless content management system. In Strapi versions prior to 5.33.3, the Upload plugin's Content API endpoints did not enforce the administrator-configured MIME type restrictions plugin.upload.security.allowedTypes and deniedTypes. The same restrictions were correctly...