SEPTEMBER 17, 2026
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Case File

CVE-2026-65645

MEDIUM · CVSS 4.3 EPSS 0.20% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-21 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Rocket.Chat versions prior to 8.8.0 and several earlier releases are vulnerable due to insufficient schema validation in the Meteor DDP methods getThreadsList and getThreadMessages, allowing attackers to inject MongoDB operator objects. This flaw can lead to unauthorized disclosure of private thread information to low-privilege authenticated users, compromising sensitive data. Organizations using affected versions should prioritize patching to mitigate the risk of data exposure.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-65645
Severity
MEDIUM
CVSS
4.3
EPSS
0.20%
MongoDB

Original NVD Description

Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6. 8.3.8, 8.2.8, 8.1.8, and 7.10.15, the Meteor DDP methods getThreadsList and getThreadMessages accept rid / tmid as raw, untyped parameters with no schema validation. A MongoDB operator object (e.g. {"$gt": "4"}) can be substituted for a string room-id or message-id. The authorization check resolves to a room the attacker already has access to, while the downstream data query fans out across all rooms - disclosing private thread parents and their full reply content to any low-privilege authenticated user. The REST route chat.getThreadsList was patched in v5.0 (HackerOne report #1446767) by adding rid: {type:'string'} AJV validation. The equivalent DDP method was never given the same fix and remains exploitable

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