CVE-2023-25172

Discourse is an open-source discussion platform. Prior to version 3.0.1 of the stable branch and version 3.1.0.beta2 of the beta and tests-passed branches, a maliciously crafted URL can be included in a user's full name field to to carry out cross-site scripting attacks on sites with a disabled o...

CVE-2023-43814

Discourse is an open source platform for community discussion. Attackers with details specific to a poll in a topic can use the /polls/groupedpollresults endpoint to view the content of options in the poll and the number of votes for groups of poll participants. This impacts private polls where t...

CVE-2022-21677

Discourse is an open source discussion platform. Discourse groups can be configured with varying visibility levels for the group as well as the group members. By default, a newly created group has its visibility set to public and the group's members visibility set to public as well. However, a...

CVE-2022-46180

Discourse Mermaid discourse-mermaid-theme-component allows users of Discourse, open-source forum software, to create graphs using the Mermaid syntax. Users of discourse-mermaid-theme-component version 1.0.0 who can create posts are able to inject arbitrary HTML on that post. The issue has been...

CVE-2022-31184

Discourse is the an open source discussion platform. In affected versions an email activation route can be abused to send mass spam emails. A fix has been included in the latest stable, beta and tests-passed versions of Discourse which rate limits emails. Users are advised to upgrade. Users unabl...

CVE-2022-46150

Discourse is an open-source discussion platform. Prior to version 2.8.13 of the stable branch and version 2.9.0.beta14 of the beta and tests-passed branches, unauthorized users may learn of the existence of hidden tags and that they have been applied to topics that they have access to. This issue...

CVE-2022-46159

Discourse is an open-source discussion platform. In version 2.8.13 and prior on the stable branch and version 2.9.0.beta14 and prior on the beta and tests-passed branches, any authenticated user can create an unlisted topic. These topics, which are not readily available to other users, can take u...

CVE-2022-31095

discourse-chat is a chat plugin for the Discourse application. Versions prior to 0.4 are vulnerable to an exposure of sensitive information, where an attacker who knows the message ID for a channel they do not have access to can view that message using the chat message lookup endpoint, primarily...

CVE-2022-31059

Discourse Calendar is a calendar plugin for Discourse, an open-source messaging app. Prior to version 1.0.1, parsing and rendering of Event names can be susceptible to cross-site scripting XSS attacks. This vulnerability only affects sites which have modified or disabled Discourse’s default Conte...

CVE-2022-41921

Discourse is an open-source discussion platform. Prior to version 2.9.0.beta13, users can post chat messages of an unlimited length, which can cause a denial of service for other users when posting huge amounts of text. Users should upgrade to version 2.9.0.beta13, where a limit has been...

CVE-2022-41913

Discourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic. Members of private groups or public groups with private members can be listed by users, who can create and edit post events. This vulnerability onl...

CVE-2022-39385

Discourse is the an open source discussion platform. In some rare cases users redeeming an invitation can be added as a participant to several private message topics that they should not be added to. They are not notified of this, it happens transparently in the background. This issue has been...

CVE-2022-39232

Discourse is an open source discussion platform. Starting with version 2.9.0.beta5 and prior to version 2.9.0.beta10, an incomplete quote can generate a JavaScript error which will crash the current page in the browser in some cases. Version 2.9.0.beta10 added a fix and tests to ensure incomplete...

CVE-2022-46168

Discourse is an option source discussion platform. Prior to version 2.8.14 on the stable branch and version 2.9.0.beta15 on the beta and tests-passed branches, recipients of a group SMTP email could see the email addresses of all other users inside the group SMTP topic. Most of the time this is n...

CVE-2022-36057

Discourse-Chat is an asynchronous messaging plugin for the Discourse open-source discussion platform. Users of Discourse Chat can be affected by admin users inserting HTML into chat titles and descriptions, causing a Cross-Site Scripting XSS attack. Version 0.9 contains a patch for this issue...

CVE-2022-31060

Discourse is an open-source discussion platform. Prior to version 2.8.4 in the stable branch and version 2.9.0.beta5 in the beta and tests-passed branches, banner topic data is exposed on login-required sites. This issue is patched in version 2.8.4 in the stable branch and version 2.9.0.beta5 in...

CVE-2022-41944

Discourse is an open-source discussion platform. In stable versions prior to 2.8.12 and beta or tests-passed versions prior to 2.9.0.beta.13, under certain conditions, a user can see notifications for topics they no longer have access to. If there is sensitive information in the topic title, it...

CVE-2022-24824

Discourse is an open source platform for community discussion. In affected versions an attacker can poison the cache for anonymous i.e. not logged in users, such that the users are shown the crawler view of the site instead of the HTML page. This can lead to a partial denial-of-service. This issu...

CVE-2022-24850

Discourse is an open source platform for community discussion. A category's group permissions settings can be viewed by anyone that has access to the category. As a result, a normal user is able to see whether a group has read/write permissions in the category even though the information should...

CVE-2022-24804

Discourse is an open source platform for community discussion. In stable versions prior to 2.8.3 and beta versions prior 2.9.0.beta4 erroneously expose groups. When a group with restricted visibility has been used to set the permissions of a category, the name of the group is leaked to any user...