CVE-2025-48053

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the stable branch, version 3.5.0.beta5 of the beta branch, and version 3.5.0.beta6-dev of the tests-passed branch, sending a malicious URL in a PM to a bot user can cause a reduced the availability of a Discourse instance...

CVE-2025-48053 Discourse vulnerable to DoS via large URL payload in PM to a bot

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the stable branch, version 3.5.0.beta5 of the beta branch, and version 3.5.0.beta6-dev of the tests-passed branch, sending a malicious URL in a PM to a bot user can cause a reduced the availability of a Discourse instance...

CVE-2025-48053 Discourse vulnerable to DoS via large URL payload in PM to a bot

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the stable branch, version 3.5.0.beta5 of the beta branch, and version 3.5.0.beta6-dev of the tests-passed branch, sending a malicious URL in a PM to a bot user can cause a reduced the availability of a Discourse instance...

CVE-2025-3054

The WP User Frontend Pro plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the uploadfiles function in all versions up to, and including, 4.1.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload...

CVE-2025-3054

The WP User Frontend Pro plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the uploadfiles function in all versions up to, and including, 4.1.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload...

CVE-2023-0453

The WP Private Message WordPress plugin bundled with the Superio theme as a required plugin before 1.0.6 does not ensure that private messages to be accessed belong to the user making the requests. This allowing any authenticated users to access private messages belonging to other users by...

CVE-2023-0549

A vulnerability, which was classified as problematic, has been found in YAFNET up to 3.1.10. This issue affects some unknown processing of the file /forum/PostPrivateMessage of the component Private Message Handler. The manipulation of the argument subject/message leads to cross site scripting. T...

CVE-2023-30417

A cross-site scripting XSS vulnerability in Pear-Admin-Boot up to v2.0.2 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Title of a private message...

CVE-2022-2198

The WPQA Builder WordPress plugin before 5.7 which is a companion plugin to the Hilmer and Discy , does not check authorization before displaying private messages, allowing any logged in user to read other users private message using the message id, which can easily be brute forced...

CVE-2020-19288

A stored cross-site scripting XSS vulnerability in the /localhost/u component of Jeesns 1.4.2 allows attackers to execute arbitrary web scripts or HTML via a crafted payload in a private message...

CVE-2002-2230

Cross-site scripting XSS vulnerability in Ikonboard 3.1.1 allows remote attackers to inject arbitrary web script or HTML via a private message with a javascript: URL in the IMG tag, in which the URL ends in a ".gif" or ".jpg" string, a variant of CVE-2002-0328...

CVE-2005-3537

A "missing request validation" error in phpBB 2 before 2.0.18 allows remote attackers to edit private messages of other users, probably by modifying certain parameters or other inputs...

CVE-2025-32783

XWiki Platform is a generic wiki platform. A vulnerability in versions from 5.0 to 16.7.1 affects users with Message Stream enabled and a wiki configured as closed from selecting "Prevent unregistered users to view pages" in the Administrations Rights. The vulnerability is that any message sent i...

CVE-2024-56197

Discourse is an open source platform for community discussion. PM titles and metadata can be read by other users when the "PM tags allowed for groups" option is enabled, the other user is a member of a group added to this option, and the PM has been tagged. This issue has been patched in the late...

CVE-2024-23649

Lemmy is a link aggregator and forum for the fediverse. Starting in version 0.17.0 and prior to version 0.19.1, users can report private messages, even when they're neither sender nor recipient of the message. The API response to creating a private message report contains the private message...

BIT-DISCOURSE-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...

BIT-DISCOURSE-2021-41082

Discourse is a platform for community discussion. In affected versions any private message that includes a group had its title and participating user exposed to users that do not have access to the private messages. However, access control for the private messages was not compromised as users wer...

GHSA-R64R-5H43-26QV Any authenticated user may obtain private message details from other users on the same instance

Summary Users can report private messages, even when they're neither sender nor recipient of the message. The API response to creating a private message report contains the private message itself, which means any user can just iterate over message ids to loudly obtain all private messages of an...

Design/Logic Flaw

Lemmy is a link aggregator and forum for the fediverse. Starting in version 0.17.0 and prior to version 0.19.1, users can report private messages, even when they're neither sender nor recipient of the message. The API response to creating a private message report contains the private message...

CVE-2024-23649 Any authenticated user may obtain private message details from other users on the same instance

Lemmy is a link aggregator and forum for the fediverse. Starting in version 0.17.0 and prior to version 0.19.1, users can report private messages, even when they're neither sender nor recipient of the message. The API response to creating a private message report contains the private message...