CVE-2026-33300 Discourse: Hidden group names and access metadata are exposed to moderators through the `category-chatables` endpoint

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden...

CVE-2026-33300

Discourse is affected by CVE-2026-33300. The flaw is an authorization bypass in the Category Chatables Controller show action that allowed moderators to view information on hidden groups names and user counts. Affected versions include 2026.1.0-latest up to before 2026.1.3, 2026.2.0-latest up to ...

CVE-2026-33300 Discourse: Hidden group names and access metadata are exposed to moderators through the `category-chatables` endpoint

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden...

CVE-2026-33300

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden...

EUVD-2026-17572

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden...

CVE-2026-33300 Discourse: Hidden group names and access metadata are exposed to moderators through the `category-chatables` endpoint

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden...

EUVD-2026-16732

AVideo has User Group-Based Category Access Control Bypass via Missing and Broken Group Filtering in categories.json.php...

AVideo has User Group-Based Category Access Control Bypass via Missing and Broken Group Filtering in categories.json.php

Summary The categories.json.php endpoint, which serves the category listing API, fails to enforce user group-based access controls on categories. In the default request path no ?user= parameter, user group filtering is entirely skipped, exposing all non-private categories including those restrict...

CVE-2026-32975 OpenClaw < 2026.3.12 - Weak Authorization via Mutable Group Names in Zalouser Allowlist

OpenClaw before 2026.3.12 contains a weak authorization vulnerability in Zalouser allowlist mode that matches mutable group display names instead of stable group identifiers. Attackers can create groups with identical names to allowlisted groups to bypass channel authorization and route messages...

CVE-2026-34364

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the categories.json.php endpoint, which serves the category listing API, fails to enforce user group-based access controls on categories. In the default request path no ?user= parameter, user group filtering is...

EUVD-2026-16324

path-to-regexp vulnerable to Denial of Service via sequential optional groups...

path-to-regexp vulnerable to Denial of Service via sequential optional groups

Impact A bad regular expression is generated any time you have multiple sequential optional groups curly brace syntax, such as abc:z. The generated regex grows exponentially with the number of groups, causing denial of service. Patches Fixed in version 8.4.0. Workarounds Limit the number of...

GHSA-J3Q9-MXJG-W52F path-to-regexp vulnerable to Denial of Service via sequential optional groups

Impact A bad regular expression is generated any time you have multiple sequential optional groups curly brace syntax, such as abc:z. The generated regex grows exponentially with the number of groups, causing denial of service. Patches Fixed in version 8.4.0. Workarounds Limit the number of...

CVE-2026-34364

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the categories.json.php endpoint, which serves the category listing API, fails to enforce user group-based access controls on categories. In the default request path no ?user= parameter, user group filtering is...

CVE-2026-34364 AVideo has User Group-Based Category Access Control Bypass via Missing and Broken Group Filtering in categories.json.php

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the categories.json.php endpoint, which serves the category listing API, fails to enforce user group-based access controls on categories. In the default request path no ?user= parameter, user group filtering is...

CVE-2026-34364

CVE-2026-34364 (WWBN AVideo) affects the category listing API implemented in the categories.json.php endpoint. In versions up to and including 26.0, category access control is not enforced when no ?user= parameter is provided, causing all non-private categories (including those restricted to spec...

CVE-2026-34364 AVideo has User Group-Based Category Access Control Bypass via Missing and Broken Group Filtering in categories.json.php

WWBN AVideo is an open source video platform. In versions up to and including 26.0, the categories.json.php endpoint, which serves the category listing API, fails to enforce user group-based access controls on categories. In the default request path no ?user= parameter, user group filtering is...

CVE-2021-27904

An issue was discovered in app/Model/SharingGroupServer.php in MISP 2.4.139. In the implementation of Sharing Groups, the "all org" flag sometimes provided view access to unintended actors...

CVE-2021-27948

SQL Injection vulnerability in MyBB before 1.8.26 via User Groups. issue 3 of 3...

BIT-DISCOURSE-2026-33425 Discourse has inferable private group membership or existence via exclude_groups parameter

Discourse is an open-source discussion platform. Prior to versions 2026.3.0, 2026.2.1, and 2026.1.2, unauthenticated users can determine whether a specific user is a member of a private group by observing changes in directory results when using the excludegroups parameter. Versions 2026.3.0,...