CVEvulnerability

CVE-2026-65645

4.3 MEDIUM Published 2026-08-21 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-08-21
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
4.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-20

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

Affected configurations

• rocket.chat rocket.chat (< 7.10.15) • rocket.chat rocket.chat (>= 8.1.0 < 8.1.8) • rocket.chat rocket.chat (>= 8.2.0 < 8.2.8) • rocket.chat rocket.chat (>= 8.3.0 < 8.3.8) • rocket.chat rocket.chat (>= 8.4.0 < 8.4.6) • rocket.chat rocket.chat (>= 8.5.0 < 8.5.3) • rocket.chat rocket.chat (>= 8.6.0 < 8.6.2) • rocket.chat rocket.chat 8.7.0

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References