EUVD-2026-96869

A vulnerability has been found in InstantSoft icms2 up to 2.18.2. This issue affects the function index of the file templates/default/controllers/messages/index.tpl.php of the component Private Message Handler. Such manipulation of the argument nickname leads to cross site scripting. The attack c...

CVE-2026-108566

A cross-site scripting (XSS) vulnerability exists in InstantSoft icms2 versions up to 2.18.2 . The flaw is located in the index function of the templates/default/controllers/messages/index.tpl.php file within the Private Message Handler component. Improper handling of the nickname argument allows...

CVE-2026-108164 Open Source Social Network (OSSN) through 10.1 IDOR via Message Attachment Route

Open Source Social Network OSSN through 10.1 contains an insecure direct object reference vulnerability in components/OssnMessages/ossncom.php that allows authenticated users to read other users' private message attachments. Attackers can request the /messages/attachment/guid route with sequentia...

EUVD-2026-96319

Open Source Social Network OSSN through 10.1 contains an insecure direct object reference vulnerability in components/OssnMessages/ossncom.php that allows authenticated users to read other users' private message attachments. Attackers can request the /messages/attachment/guid route with sequentia...

CVE-2026-89093

The Better Messages WordPress plugin (versions up to and including 2.15.33 ) is vulnerable to Information Exposure by Spoofing . The is_ai_bot_user() function identifies privileged internal AI bot accounts by checking for the prefix 'ai-chat-bot-' against a guest record's stored IP address, which...

BIT-DISCOURSE-2026-59829 Discourse: Review queue exposes flag-related private message excerpts to category group moderators

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt and permalink of the private message attached to a flag, even when the reviewing category moderator was...

PT-2026-79848

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt and permalink of the private message attached to a flag, even when the reviewing category moderator was...

CVE-2026-54741

Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. createprivatemessage checks the recipient's block list with...

CVE-2026-54741

In Lemmy (versions before 0.19.19 and 1.0.0-alpha.18), the edit_private_message function in crates/api/api_crud/src/private_message/update.rs only verifies the caller is the original message creator, skipping the recipient block-list check that create_private_message performs. This allows a block...

CVE-2026-54741 Lemmy: Blocked users can edit private messages sent before the block

Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. createprivatemessage checks the recipient's block list with...

CVE-2026-54741 Lemmy: Blocked users can edit private messages sent before the block

Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. createprivatemessage checks the recipient's block list with...

EUVD-2026-62843

Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. createprivatemessage checks the recipient's block list with...

PT-2026-78676

Lemmy is a link aggregator and forum for the fediverse. Prior to 0.19.19 and 1.0.0-alpha.18, Lemmy blocks new private messages from a sender after the recipient blocks that sender, but the edit path skips the same block check. create private message checks the recipient's block list with...

CVE-2026-59829

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt and permalink of the private message attached to a flag, even when the reviewing category moderator was...

CVE-2026-59829 Discourse: Review queue exposes flag-related private message excerpts to category group moderators

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt and permalink of the private message attached to a flag, even when the reviewing category moderator was...

CVE-2026-59829 Discourse: Review queue exposes flag-related private message excerpts to category group moderators

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt and permalink of the private message attached to a flag, even when the reviewing category moderator was...

CVE-2026-59829 Discourse: Review queue exposes flag-related private message excerpts to category group moderators

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt and permalink of the private message attached to a flag, even when the reviewing category moderator was...

BIT-DISCOURSE-2026-72724 Discourse: Private Chat Threat Message Disclosure via Chat Onebox Channel/Threat ID Mismatch

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, plugins/chat/lib/chat/oneboxhandler.rb resolves Chat::Thread by route threadid independently of the route channelid before checking whether the user can preview the selected chat channel. An...

CVE-2026-59829: Missing Authorization

Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.1, on sites with category group moderation enabled, the review queue could include an excerpt and permalink of the private message attached to a flag, even when the reviewing category moderator was...

PT-2026-76683

Name of the Vulnerable Software and Affected Versions Discourse versions prior to 2026.1.6 Discourse versions prior to 2026.5.2 Discourse versions prior to 2026.6.1 Discourse versions prior to 2026.7.1 Description On sites with category group moderation enabled, the review queue may expose an...