Discourse cross-site scripting vulnerability (CNVD-2026-17253)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from a cross-site scripting vulnerability that can be exploited by an attacker to inject arbitrary HTML and JavaScript...

Discourse Information Disclosure Vulnerability (CNVD-2026-17258)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from an information disclosure vulnerability that stems from non-employee users having access to read receipt informati...

Discourse Information Disclosure Vulnerability (CNVD-2026-17257)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . An information disclosure vulnerability exists in Discourse, which can be exploited by attackers to cause sensitive operational data to b...

Discourse cross-site scripting vulnerability (CNVD-2026-17263)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from a cross-site scripting vulnerability that stems from the user and group display names not being HTML escaped in...

Discourse Input Validation Error Vulnerability (CNVD-2026-17260)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from an input validation error vulnerability that originates when the enter operation in StaticController reads the...

Discourse authorization issue vulnerability (CNVD-2026-17259)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from an authorization issue vulnerability that stems from a category group moderator being able to perform privileged...

Discourse Information Disclosure Vulnerability (CNVD-2026-17250)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse has an information leakage vulnerability , the vulnerability stems from the discourse-subscriptions plugin leaks stripe API key...

Discourse authorization issue vulnerability (CNVD-2026-17254)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from an authorization issue vulnerability that can be exploited by an attacker to cause a user to purchase a lower tier...

Discourse Access Control Error Vulnerability (CNVD-2026-17476)

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from an Access Control Error vulnerability that can be exploited by an attacker to retrieve the content of posts, threa...

Discourse Cross-Site Scripting Vulnerability

Discourse is Discourse open source set of open source community discussion platform. The platform includes features such as community , e-mail and chat rooms . Discourse suffers from a cross-site scripting vulnerability that stems from the API not cleaning up the description string when updating...

BIT-DISCOURSE-2026-34947 Discourse: Staged user custom fields are exposed on public invite pages

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3,and 2026.2.0 to before 2026.2.2, staged user custom fields and username are exposed on public invite pages without email verification. This issue has been patched in versions 2026.1.3 and 2026.2.2...

BIT-DISCOURSE-2026-27481 Discourse: Hidden tag visibility bypass on tag routes

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, an authorization bypass vulnerability allows unauthenticated or unauthorized users to view hidden staff-only tags and its associated data. All Discourse instances with...

BIT-DISCOURSE-2026-33415 Discourse: Improper Access Control in discourse-ai Allows Unauthorized Category Content Exposure

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, an authenticated moderator-level user could retrieve post content, topic titles, and usernames from categories they were not authorized to view. Insufficient access control...

BIT-DISCOURSE-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 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, an authorization bypass in the Category Chatables Controller show action allowed moderators to get information on hidden groups names and user count. This issue has been...

BIT-DISCOURSE-2026-33185 Discourse: Group SMTP test endpoint susceptible to SSRF

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, the group email settings test endpoint could be used to make the server initiate outbound connections to arbitrary hosts and ports. This could allow probing of internal...

BIT-DISCOURSE-2026-33074 Discourse: Vulnerability in discourse-subscriptions plugin allowing users to self-grant to higher tier subscriptions

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, a user may be able to purchase a lower tier subscription but grant themselves the benefits that comes along with a higher tier subscription. This issue has been patched in...

BIT-DISCOURSE-2026-33073 discourse-subscriptions plugin leaking stripe API key in multisite environment

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, the discourse-subscriptions plugin leaks stripe API keys across sites in a multisite cluster resulting in the potential for stripe related information to be leaked across...

BIT-DISCOURSE-2026-32951 Discourse: Authorization bypass in oneboxer via user-controlled category id

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, an authenticated user can obtain shared draft topic titles by sending an inline onebox request with a categoryid parameter matching the shared drafts category. This issue h...

BIT-DISCOURSE-2026-32620 Discourse: Missing post-level authorization allows whisper metadata disclosure

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content was exposed, only metadata about who read the post...

BIT-DISCOURSE-2026-32619 Discourse: Insufficient topic visibility check allows unauthorized poll manipulation in private categories

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, users who lost access to a topic e.g., removed from a private category group could still interact with polls in that topic, including voting and toggling poll status. No...