Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication

SummaryWhen more than one external tool server is reachable in the same request, a tool call to a server configured for bearer authentication can arrive carrying the calling user's Open WebUI session cookies alongside that server's own key. The cookie jar is built per connection, but the callable...

GO-2026-6527 zot: Bearer authentication maps DELETE to push scope, allowing unauthorized deletion in zotregistry.dev/zot

zot: Bearer authentication maps DELETE to push scope, allowing unauthorized deletion in zotregistry.dev/zot...

EUVD-2026-83187

zot is a container image and artifact registry based on the Open Container Initiative Distribution Specification. Prior to 2.1.18, the bearer authentication handler in pkg/api/authn.go maps every HTTP method other than GET and HEAD to the push action, so DELETE requests are not checked for the...

CVE-2026-61833 zot: Bearer authentication maps DELETE to push scope, allowing unauthorized deletion

zot is a container image and artifact registry based on the Open Container Initiative Distribution Specification. Prior to 2.1.18, the bearer authentication handler in pkg/api/authn.go maps every HTTP method other than GET and HEAD to the push action, so DELETE requests are not checked for the...

CVE-2026-61833: Improper Authorization

zot is a container image and artifact registry based on the Open Container Initiative Distribution Specification. Prior to 2.1.18, the bearer authentication handler in pkg/api/authn.go maps every HTTP method other than GET and HEAD to the push action, so DELETE requests are not checked for the...

Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication

Summary When more than one external tool server is reachable in the same request, a tool call to a server configured for bearer authentication can arrive carrying the calling user's Open WebUI session cookies alongside that server's own key. The cookie jar is built per connection, but the callabl...

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 via the tool loading process. An attacker can gain unauthorized access to user session credentials by operating a tool server configured for bearer...

GHSA-P78M-89R6-PGF7 Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication

Summary When more than one external tool server is reachable in the same request, a tool call to a server configured for bearer authentication can arrive carrying the calling user's Open WebUI session cookies alongside that server's own key. The cookie jar is built per connection, but the callabl...

CVE-2026-87015 Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 until 0.11.1, backend/openwebui/utils/tools.py captured a cookie jar from the enclosing connection loop instead of binding it to each external tool callable. When multiple tool servers were attached...

CVE-2026-87015 Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 until 0.11.1, backend/openwebui/utils/tools.py captured a cookie jar from the enclosing connection loop instead of binding it to each external tool callable. When multiple tool servers were attached...

CVE-2026-87015 Open WebUI: A user's session cookies are sent to tool servers configured for bearer authentication

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 until 0.11.1, backend/openwebui/utils/tools.py captured a cookie jar from the enclosing connection loop instead of binding it to each external tool callable. When multiple tool servers were attached...

CVE-2026-87015

Open WebUI versions 0.6.27 through 0.11.1 are affected by a session cookie leakage flaw in backend/open_webui/utils/tools.py . The cookie jar from the enclosing connection loop was not bound to each external tool callable, so when multiple tool servers were attached and a session or system OAuth ...

CVE-2026-87015: Insertion of Sensitive Information Into Sent Data

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.6.27 until 0.11.1, backend/openwebui/utils/tools.py captured a cookie jar from the enclosing connection loop instead of binding it to each external tool callable. When multiple tool servers were attached...

EUVD-2026-51613

Contao crawler leaks auth credentials to external hosts...

GHSA-3MR9-P497-58F6 Contao crawler leaks auth credentials to external hosts

Summary Contao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes Cookie and Authorization headers, but it removes the non-Symfony...

CVE-2026-55824 Contao crawler leaks auth credentials to external hosts

Contao is an Open Source CMS. In versions 4.13.40 through 5.3.46 and 5.7.0-RC1 through 5.7.6, the crawler leaks auth credentials to external hosts. Contao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for...

CVE-2026-55824 Contao crawler leaks auth credentials to external hosts

Contao is an Open Source CMS. In versions 4.13.40 through 5.3.46 and 5.7.0-RC1 through 5.7.6, the crawler leaks auth credentials to external hosts. Contao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for...

CVE-2026-55824 Contao crawler leaks auth credentials to external hosts

Contao is an Open Source CMS. In versions 4.13.40 through 5.3.46 and 5.7.0-RC1 through 5.7.6, the crawler leaks auth credentials to external hosts. Contao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for...

hono: Hono - Timing Attack in basicAuth and bearerAuth Middleware

A flaw was found in Hono. This vulnerability, a timing attack, exists in the basicAuth and bearerAuth middlewares due to a non-constant-time string comparison. A remote attacker could exploit the early termination of string equality checks to infer valid credentials by precisely measuring respons...

hono: Hono - Timing Attack in basicAuth and bearerAuth Middleware

A flaw was found in Hono. This vulnerability, a timing attack, exists in the basicAuth and bearerAuth middlewares due to a non-constant-time string comparison. A remote attacker could exploit the early termination of string equality checks to infer valid credentials by precisely measuring respons...