CVE-2026-45677

Summary (CVE-2026-45677): Rocket.Chat prior to versions 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11 fails to verify the signature on inbound SAML LogoutRequest messages. This allows an unauthenticated remote attacker who knows a target user’s SAML NameID (commonly the user’s ema...

EUVD-2026-39091

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's SAML integration does not verify the signature on inbound LogoutRequest messages. An unauthenticated remote attacker who knows a...

CVE-2026-45677 Rocket.Chat: Lack of SAML Signature Check During Logout Could Lead To DoS

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's SAML integration does not verify the signature on inbound LogoutRequest messages. An unauthenticated remote attacker who knows a...

CVE-2026-47733 Rocket.Chat: Missing URL protocol sanitization in ImageElement allows javascript: URLs in markdown images

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, the ImageElement component in packages/gazzodown renders user-controlled src values directly into and attributes without protocol sanitization. Unlike the analogous LinkSpan component — which uses...

CVE-2026-47733 Rocket.Chat: Missing URL protocol sanitization in ImageElement allows javascript: URLs in markdown images

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, the ImageElement component in packages/gazzodown renders user-controlled src values directly into and attributes without protocol sanitization. Unlike the analogous LinkSpan component — which uses...

CVE-2026-47733 Rocket.Chat: Missing URL protocol sanitization in ImageElement allows javascript: URLs in markdown images

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, the ImageElement component in packages/gazzodown renders user-controlled src values directly into and attributes without protocol sanitization. Unlike the analogous LinkSpan component — which uses...

CVE-2026-47733

Rocket.Chat CVE-2026-47733 affects the ImageElement in packages/gazzodown prior to 8.5.0, where user-controlled src values are inserted into and without protocol sanitization. An authenticated user can post markdown images with a javascript: URL that, on older browsers, could execute arbitrary ...

PT-2026-52092

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's sendFileMessage DDP method passes the entire attacker-supplied file object into Uploads.updateFileComplete, which merges it...

PT-2026-52095

Name of the Vulnerable Software and Affected Versions Rocket.Chat versions prior to 8.5.0 Rocket.Chat versions prior to 8.4.2 Rocket.Chat versions prior to 8.3.4 Rocket.Chat versions prior to 8.2.4 Rocket.Chat versions prior to 8.1.5 Rocket.Chat versions prior to 8.0.6 Rocket.Chat versions prior ...

PT-2026-52093

🚨 CVE-2026-45688 Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's CAS login handler forwards the client-supplied options.cas.credentialToken value straight into a MongoDB findOn...

PT-2026-52091

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's SAML integration does not verify the signature on inbound LogoutRequest messages. An unauthenticated remote attacker who knows a...

PT-2026-52099

Name of the Vulnerable Software and Affected Versions Rocket.Chat versions prior to 8.5.0 Rocket.Chat versions prior to 8.4.2 Rocket.Chat versions prior to 8.3.4 Rocket.Chat versions prior to 8.2.4 Rocket.Chat versions prior to 8.1.5 Rocket.Chat versions prior to 8.0.6 Rocket.Chat versions prior ...

PT-2026-52096

Name of the Vulnerable Software and Affected Versions Rocket.Chat versions prior to 8.5.0 Rocket.Chat versions prior to 8.4.1 Rocket.Chat versions prior to 8.3.3 Rocket.Chat versions prior to 8.2.3 Rocket.Chat versions prior to 8.1.4 Rocket.Chat versions prior to 8.0.5 Rocket.Chat versions prior ...

PT-2026-52098

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.2, 8.3.4, 8.2.4, 8.1.5, 8.0.6, 7.13.8, and 7.10.12, Rocket.Chat does not revoke OAuth bearer or refresh tokens when a user is deactivated. A deactivated user can continue using an existing OAuth...

PT-2026-52094

🚨 CVE-2026-45689 Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, an unauthenticated network attacker obtains a valid Rocket.Chat OAuth access token for an arbitrary user by sending a single...

Meteor 3.0 Migration Helped Rocket.Chat Move Off End-of-Life Node.js Runtime

Meteor 3.0 helped Rocket.Chat move from Node.js 14 to Node.js 20, cutting runtime debt after Fibers removal and reducing supply-chain risk across federal users...

OPENSUSE-SU-2026:21136-1 Security update for golang-github-prometheus-alertmanager

This update for golang-github-prometheus-alertmanager fixes the following issues: Changes in golang-github-prometheus-alertmanager: - Update to version 0.28.1 jscPED-13285: Improved performance of inhibition rules when using Equal labels. Improve the documentation on escaping in UTF-8 matchers...

EUVD-2026-37513

Rocket.Chat in versions 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, and 7.10.13 is vulnerable to unauthenticated file deletion. The deleteFileMessage Meteor method permanently deletes any uploaded file by ID without requiring authentication. When called via an unauthenticated DDP WebSocket...

CVE-2026-48616

Rocket.Chat versions 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, 7.10.13 has an access control vulnerability in Livechat files. Protected file downloads at /file-upload/:fileId/:name authorize livechat access using rcroomtype=l with rcrid+rctoken, but the authorization path does not verify...

CVE-2026-48929

Rocket.Chat in versions 8.5.1, 8.4.4, 8.3.6, 8.2.6, 8.1.6, 8.0.7, 7.13.9, and 7.10.13 is vulnerable to unauthenticated file deletion. The deleteFileMessage Meteor method permanently deletes any uploaded file by ID without requiring authentication. When called via an unauthenticated DDP WebSocket...