CVE-2022-31095

Exposure of Sensitive Information in discourse-chat

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 affecting direct message channels. There are no known workarounds for this issue, and users are advised to update the plugin.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse-chat

CVE-2022-31096

Invites restricted to an email or invite links restricted to an email domain may be bypassed by a under certain conditions in Discourse

Discourse is an open source discussion platform. Under certain conditions, a logged in user can redeem an invite with an email that either doesn't match the invite's email or does not adhere to the email domain restriction of an invite link. The impact of this flaw is aggravated when the invite has been configured to add the user that accepts the invite into restricted groups. Once a user has been incorrectly added to a restricted group, the user may then be able to view content which that are restricted to the respective group. Users are advised to upgrade to the current stable releases. There are no known workarounds to this issue.

CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-31182

Cache poisoning via maliciously-formed request in Discourse

Discourse is the an open source discussion platform. In affected versions a maliciously crafted request for static assets could cause error responses to be cached by Discourse's default NGINX proxy configuration. A corrected NGINX configuration is included in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-31184

Email activation route can be abused by spammers in Discourse

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 unable to upgrade should manually rate limit email.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-36057

Discourse-Chat Cross-Site Scripting issue for channel names and descriptions

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.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse-chat

CVE-2022-36066

Discourse vulnerable to RCE via admins uploading maliciously zipped file

Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, admins can upload a maliciously crafted Zip or Gzip Tar archive to write files at arbitrary locations and trigger remote code execution. The problem is patched in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.

CVSS 3.1 · 9.1 Critical EPSS 2.1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-36068

Discourse moderators can edit themes via the API

Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, a moderator can create new and edit existing themes by using the API when they should not be able to do so. The problem is patched in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-39226

Discourse user profile location and website fields were not sufficiently length-limited

Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, a malicious actor can add large payloads of text into the Location and Website fields of a user profile, which causes issues for other users when loading that profile. A fix to limit the length of user input for these fields is included in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.

CVSS 3.1 · 4.3 Medium EPSS 1.0% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-39232

Discourse vulnerable to incomplete quote causing a topic to crash in the browser

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 quotes won't break the app. As a workaround, the quote can be fixed via the rails console.

CVSS 3.1 · 6.5 Medium EPSS 1.2% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-39279

Discourse-chat plugin susceptible to XSS in channel name and description

discourse-chat is a plugin for the Discourse message board which adds chat functionality. In versions prior to 0.9 some places render a chat channel's name and description in an unsafe way, allowing staff members to cause an cross site scripting (XSS) attack by inserting unsafe HTML into them. Version 0.9 has addressed this issue. Users are advised to upgrade. There are no known workarounds for this issue.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse-chat

CVE-2022-39355

Discourse Patreon vulnerable to improper validation of email during Patreon authentication

Discourse Patreon enables syncronization between Discourse Groups and Patreon rewards. On sites with Patreon login enabled, an improper authentication vulnerability could be used to take control of a victim's forum account. This vulnerability is patched in commit number 846d012151514b35ce42a1636c7d70f6dcee879e of the discourse-patreon plugin. Out of an abundance of caution, any Discourse accounts which have logged in with an unverified-email Patreon account will be logged out and asked to verify their email address on their next login. As a workaround, disable the patreon integration and log out all users with associated Patreon accounts.

CVSS 3.1 · 9.1 Critical EPSS 1.0% KEV · Not listed

Vendors

Discourse

Products

Patreon

CVE-2022-39356

Discourse user account takeover via email and invite link

Discourse is a platform for community discussion. Users who receive an invitation link that is not scoped to a single email address can enter any non-admin user's email and gain access to their account when accepting the invitation. All users should upgrade to the latest version. A workaround is temporarily disabling invitations with `SiteSetting.max_invites_per_day = 0` or scope them to individual email addresses.

CVSS 3.1 · 8.9 High EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-39378

Displaying user badges can leak topic titles to users that have no access to the topic

Discourse is a platform for community discussion. Under certain conditions, a user badge may have been awarded based on a user's activity in a topic with restricted access. Before this vulnerability was disclosed, the topic title of the topic associated with the user badge may be viewed by any user. If there are sensitive information in the topic title, it will therefore have been exposed. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. There are currently no known workarounds available.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-39385

Users erroneously and transparently added to private messages in Discourse

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 resolved in commit `a414520742` and will be included in future releases. Users are advised to upgrade. Users are also advised to set `SiteSetting.max_invites_per_day` to 0 until the patch is installed.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-41913

Discourse-calendar exposes members of hidden groups

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 only affects sites which have discourse post events enabled. This issue has been patched in commit `ca5ae3e7e` which will be included in future releases. Users unable to upgrade should disable the `discourse_post_event_enabled` setting to fully mitigate the issue. Also, it's possible to prevent regular users from using this vulnerability by removing all groups from the `discourse_post_event_allowed_on_groups` but note that moderators will still be able to use it.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Calendar

CVE-2022-41921

Discourse chat messages should have a maximum character limit

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 introduced. No known workarounds are available.

CVSS 3.1 · 3.5 Low EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-41944

Discourse users can see notifications for topics they no longer have access to

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 will therefore have been exposed. This issue is patched in stable version 2.8.12, beta version 2.9.0.beta13, and tests-passed version 2.9.0.beta13. There are no workarounds available.

CVSS 3.1 · 3.5 Low EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-46148

Discourse allows self-XSS through malicious composer message

Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the `stable` branch and versions 2.9.0.beta11 and prior on the `beta` and `tests-passed` branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.

CVSS 3.1 · 7.1 High EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-46150

Discourse may allow exposure of hidden tags in the subject of notification emails

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 is patched in version 2.8.13 of the `stable` branch and version 2.9.0.beta14 of the `beta` and `tests-passed` branches. As a workaround, use the `disable_email` site setting to disable all emails to non-staff users.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse

CVE-2022-46159

Any authenticated Discourse user can create an unlisted topic

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 up unnecessary site resources. A patch for this issue is available in the `main` branch of Discourse. There are no known workarounds available.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Discourse

Products

Discourse