CVE-2026-100404

Zulip is an open-source team collaboration tool. In Zulip Server versions through 12.1, guest users can receive new message events for public channels outside their subscriptions. A guest can trigger the issue by registering an event queue with parameters that request messages from an unsubscribe...

CVE-2026-100404

The open-source team collaboration tool Zulip contains a vulnerability in Zulip Server versions through 12.1 . A guest user can receive new message events for public channels outside of their subscriptions. This occurs when a guest registers an event queue with parameters requesting messages from...

Astra Linux – Vulnerabilities in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: dmaengine: Fix double increment of clientcount in dmachanget The first time dmachanget is called for a channel the channel clientcount is incorrectly incremented twice for public channels, first in balancerefcount, and again prio...

CVE-2026-48078 OpenReception's schedule endpoint discloses isPublic=false channels and slot availability to unauthenticated callers

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.5, the unauthenticated /api/tenants/id/schedule endpoint returns every non-archived channel for a tenant regardless of the channel's isPublic flag. Channels marked...

EUVD-2026-54148

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.5, the unauthenticated /api/tenants/id/schedule endpoint returns every non-archived channel for a tenant regardless of the channel's isPublic flag. Channels marked...

CVE-2026-48078 OpenReception's schedule endpoint discloses isPublic=false channels and slot availability to unauthenticated callers

OpenReception's appointment booking software provides an end-to-end encrypted appointment booking platform. Prior to version 1.0.5, the unauthenticated /api/tenants/id/schedule endpoint returns every non-archived channel for a tenant regardless of the channel's isPublic flag. Channels marked...

CVE-2026-48076

OpenReception’s bootstrap booking flow (versions ≤1.0.1) is vulnerable to an unauthenticated booking against private channels due to a missing channel binding in the booking token. The 3-step flow: bootstrap-challenge (PoW), bootstrap-verify (issues a booking access token), and create-new-client ...

PT-2026-59355

Channel Access Grants Bypass filter allowed access grants Affected Component Channel creation and update endpoints: - backend/open webui/routers/channels.py lines 291-340, create new channel - backend/open webui/routers/channels.py lines 617-638, update channel by id - backend/open...

PT-2026-57653

Mattermost versions 11.7.x = 11.7.2, 11.6.x = 11.6.4, 10.11.x = 10.11.19 fail to restrict the group constrained channel flag to public and private channels that support group synchronization, which allows an ordinary group or direct message member to remove all participants from the conversation...

EUVD-2026-40439

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update stat...

CVE-2026-56328

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update stat...

CVE-2026-56328

Capgo before 12.128.2 is affected by an integrity issue where multiple public channels for the same app/platform can coexist, and unnamed /updates requests without a defaultChannel may resolve to a hidden winner channel. An authorized app or channel manager can create an ambiguous default update ...

CVE-2026-56328 Capgo - Integrity Issue in Release Routing via Multiple Public Channels

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update stat...

CVE-2026-56328 Capgo - Integrity Issue in Release Routing via Multiple Public Channels

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update stat...

CVE-2026-56328 Capgo - Integrity Issue in Release Routing via Multiple Public Channels

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update stat...

PT-2026-54035

Capgo before 12.128.2 allows multiple public channels for the same app and platform to coexist simultaneously, while unnamed /updates requests without defaultChannel implicitly resolve to a single hidden winner channel. An authorized app or channel manager can create ambiguous default update stat...

EUVD-2026-38373

Capgo before 12.128.2 contains an information disclosure vulnerability in the /functions/v1/channelself endpoint that allows unauthenticated attackers to enumerate non-public channel names and determine app existence and subscription status. Remote attackers can send GET requests with arbitrary...

CVE-2026-56323 Capgo - Unauthenticated Channel Enumeration and App Oracle via GET /channel_self

Capgo before 12.128.2 contains an information disclosure vulnerability in the /functions/v1/channelself endpoint that allows unauthenticated attackers to enumerate non-public channel names and determine app existence and subscription status. Remote attackers can send GET requests with arbitrary...

CVE-2026-44786

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus...

CVE-2026-44786 Discourse: Public chat MessageBus broadcasts are not restricted to chat-eligible users

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, chat events for public category channels are published to MessageBus without permission scoping, so any MessageBus...