PYSEC-2026-4124 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...

ESPHome Device Builder: Renamed auth env vars silently disable dashboard authentication on upgrade

SummaryThe dashboard reads its authentication credentials from $ESPHOMEUSERNAME and $ESPHOMEPASSWORD. Earlier versions, and the legacy esphome dashboard, read the bare $USERNAME and $PASSWORD instead. When the env vars were renamed the bare names were dropped with no fallback, so an operator who...

Open WebUI: Any authenticated user can start a non-terminating request via a folder parent cycle

SummaryAny authenticated user can move one of their own folders under itself, leaving a loop in their folder tree. The re-parent endpoint performed no check that the new parent was not the folder itself or one of its own subfolders, and the folder tree walks did not track which folders they had...

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...

Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes

SummaryA user who is demoted from admin by an identity provider keeps admin-level read and write access to every user's notes, over any Socket.IO connection that was already open when the demotion happened. Open WebUI caches the user's role on the socket at connection time, and the two SSO...

PYSEC-2026-4127 Open WebUI: Admin demoted through SSO role sync keeps read and write access to all users' notes

Summary A user who is demoted from admin by an identity provider keeps admin-level read and write access to every user's notes, over any Socket.IO connection that was already open when the demotion happened. Open WebUI caches the user's role on the socket at connection time, and the two SSO...

PYSEC-2026-4049 ESPHome Device Builder: Renamed auth env vars silently disable dashboard authentication on upgrade

Summary The dashboard reads its authentication credentials from $ESPHOMEUSERNAME and $ESPHOMEPASSWORD. Earlier versions, and the legacy esphome dashboard, read the bare $USERNAME and $PASSWORD instead. When the env vars were renamed the bare names were dropped with no fallback, so an operator who...

Open WebUI: Inaccessible knowledge bases are exposed through the built-in knowledge tool on most vector backends

SummaryThe built-in knowledge search tool returns knowledge bases the calling user has no access to. The tool works out which knowledge bases the caller may read and hands that set to the vector store as a search filter, and that filter is the only access control on the path. Most of the shipped...

Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin

SummaryAny authenticated user with access to a shared terminal server could get script of their choosing to run in the Open WebUI origin itself. The in-app port preview rendered the content of a previewed port in an iframe whose sandbox always granted allow-same-origin alongside allow-scripts, an...

PYSEC-2026-4123 Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin

Summary Any authenticated user with access to a shared terminal server could get script of their choosing to run in the Open WebUI origin itself. The in-app port preview rendered the content of a previewed port in an iframe whose sandbox always granted allow-same-origin alongside allow-scripts, a...

Open WebUI: Any authenticated user can reach the Azure platform channel via server-side web fetch

SummaryOpen WebUI fetches user-supplied URLs on the server for RAG URL ingestion and web search, and screens the resolved addresses so internal destinations cannot be reached. That screen decided whether a destination was external by asking Python's standard library whether the address is globall...

PYSEC-2026-4116 Open WebUI: Any authenticated user can reach the Azure platform channel via server-side web fetch

Summary Open WebUI fetches user-supplied URLs on the server for RAG URL ingestion and web search, and screens the resolved addresses so internal destinations cannot be reached. That screen decided whether a destination was external by asking Python's standard library whether the address is global...

Open WebUI: Sign-in as another user via wildcard characters in the OAuth subject claim on SQLite

SummaryOn SQLite deployments, the lookup that maps an external identity to a local account does a substring match instead of an exact match. A subject value containing SQL wildcard characters therefore matches accounts the value was never issued for, and the sign-in binds to whichever account the...

PYSEC-2026-4128 Open WebUI: Sign-in as another user via wildcard characters in the OAuth subject claim on SQLite

Summary On SQLite deployments, the lookup that maps an external identity to a local account does a substring match instead of an exact match. A subject value containing SQL wildcard characters therefore matches accounts the value was never issued for, and the sign-in binds to whichever account th...

PYSEC-2026-4125 Open WebUI: Inaccessible knowledge bases are exposed through the built-in knowledge tool on most vector backends

Summary The built-in knowledge search tool returns knowledge bases the calling user has no access to. The tool works out which knowledge bases the caller may read and hands that set to the vector store as a search filter, and that filter is the only access control on the path. Most of the shipped...

Security Bulletin: Multiple Vulnerabilities in IBM Concert Operate / IBM Cloud Pak for AIOps

Summary Multiple vulnerabilities were addressed in IBM Concert Operate version 5.2.0 Vulnerability Details CVEID:CVE-2026-24281 DESCRIPTION: Hostname verification in Apache ZooKeeper ZKTrustManager falls back to reverse DNS PTR when IP SAN validation fails, allowing attackers who control or spoof...

CVE-2026-97687 vulnerabilities

Vulnerabilities for packages: litellm, openstack-horizon-2026.1-fips, openstack-horizon-2025.2, kserve, semaphore, openstack-manila-2026.1, openstack-kolla-toolbox-2026.1, apache-beam-python-3.12-sdk, datadog-agent, tensorflow-gpu-jupyter, openstack-tempest-2025.2, tensorflow-cpu-jupyter,...

CVE-2026-97688 vulnerabilities

Vulnerabilities for packages: litellm, openstack-horizon-2026.1-fips, openstack-horizon-2025.2, kserve, semaphore, openstack-manila-2026.1, openstack-kolla-toolbox-2026.1, apache-beam-python-3.12-sdk, datadog-agent, tensorflow-gpu-jupyter, openstack-tempest-2025.2, tensorflow-cpu-jupyter,...

WordPress Backdoor Rebuilds Itself After Cleanup Using Files, Database, and Shared Memory

Cybersecurity researchers have shed light on a WordPress compromise in which threat actors deployed multiple persistence mechanisms to ensure that the final payload kept returning without having to infect the site again. The backdoor has been codenamed SC after the "SC" markers present in the...

OPENSUSE-SU-2026:22017-1 Security update for pcapplusplus

This update for pcapplusplus fixes the following issues: Changes in pcapplusplus: - Update to version 26.07 libpcap / WinPcap / Npcap is now optional. Bumped the minimum required C++ standard to C++14 Protocol support: Added Modbus protocol Added DoIP - Diagnostic over Internet Protocol Added...