CVE-2023-28107

Discourse is an open-source discussion platform. Prior to version 3.0.2 of the stable branch and version 3.1.0.beta3 of the beta and tests-passed branches, a user logged as an administrator can request backups multiple times, which will eat up all the connections to the DB. If this is done on a...

CVE-2023-28111

Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the beta and tests-passed branches, attackers are able to bypass Discourse's server-side request forgery SSRF protection for private IPv4 addresses by using a IPv4-mapped IPv6 address. The issue is patched in the...

CVE-2023-26040

Discourse is an open-source discussion platform. Between versions 3.1.0.beta2 and 3.1.0.beta3 of the tests-passed branch, editing or responding to a chat message containing malicious content could lead to a cross-site scripting attack. This issue is patched in version 3.1.0.beta3 of the...

CVE-2023-25819

Discourse is an open source platform for community discussion. Tags that are normally private are showing in metadata. This affects any site running the tests-passed or beta branches = 3.1.0.beta2. The issue is patched in the latest beta and tests-passed version of Discourse...

CVE-2023-23621

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the stable branch and version 3.1.0.beta2 on the beta and tests-passed branches, a malicious user can cause a regular expression denial of service using a carefully crafted user agent. This issue is patched in version 3.0....

CVE-2023-23620

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the stable branch and 3.1.0.beta2 on the beta and tests-passed branches, the contents of latest/top routes for restricted tags can be accessed by unauthorized users. This issue is patched in version 3.0.1 on the stable...

CVE-2023-28112

Discourse is an open-source discussion platform. Prior to version 3.1.0.beta3 of the beta and tests-passed branches, some user provided URLs were being passed to FastImage without SSRF protection. Insufficient protections could enable attackers to trigger outbound network connections from the...

CVE-2023-22453

Discourse is an option source discussion platform. Prior to version 2.8.14 on the stable branch and version 3.0.0.beta16 on the beta and tests-passed branches, the number of times a user posted in an arbitrary topic is exposed to unauthorized users through the /u/username.json endpoint. The issue...

CVE-2023-30538

Discourse is an open source platform for community discussion. Due to the improper sanitization of SVG files, an attacker can execute arbitrary JavaScript on the users’ browsers by uploading a crafted SVG file. This issue is patched in the latest stable and tests-passed versions of Discourse. Use...

CVE-2023-23615

Discourse is an open source discussion platform. The embeddable comments can be exploited to create new topics as any user but without any clear title or content. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. As a workaround, disable embeddable comments ...

CVE-2023-30611

Discourse-reactions is a plugin that allows user to add their reactions to the post in the Discourse messaging platform. In affected versions data about what reactions were performed on a post in a private topic could be leaked. This issue has been addressed in version 0.3. Users are advised to...

CVE-2023-23935

Discourse is an open-source messaging platform. In versions 3.0.1 and prior on the stable branch and versions 3.1.0.beta2 and prior on the beta and tests-passed branches, the count of personal messages displayed for a tag is a count of all personal messages regardless of whether the personal...

CVE-2023-23622

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, the count of topics displayed for a tag is a count of all regular topics regardless of whether the topic is in a read restricted category or...

CVE-2023-23624

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the stable branch and version 3.1.0.beta2 on the beta and tests-passed branches, someone can use the excludetag param to filter out topics and deduce which ones were using a specific hidden tag. This affects any Discourse...

CVE-2023-38684

Discourse is an open source discussion platform. Prior to version 3.0.6 of the stable branch and version 3.1.0.beta7 of the beta and tests-passed branches, in multiple controller actions, Discourse accepts limit params but does not impose any upper bound on the values being accepted. Without an...

CVE-2023-43657

discourse-encrypt is a plugin that provides a secure communication channel through Discourse. Improper escaping of encrypted topic titles could lead to a cross site scripting XSS issue when a site has content security policy CSP headers disabled. Having CSP disabled is a non-default configuration...

CVE-2023-47121

Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the stable branch and version 3.2.0.beta3 of the beta and tests-passed branches, the embedding feature is susceptible to server side request forgery. The issue is patched in version 3.1.3 of the stable branch...

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...