CVE-2021-22911Public exploitNetwork attack vector

Account takeover via password-reset token NoSQL injection

Published May 27, 2021 · Updated Aug 3, 2024

NoSQL injection in Rocket.Chat Server 3.11 through 3.13 allows remote attackers to take over accounts via a password-reset token oracle. The unauthenticated getPasswordPolicy method passes params.token directly into a MongoDB user query, letting operator objects reveal reset-token characters through success and error responses. Knowing a 2FA-disabled user's email enables account takeover; a second authenticated injection can expose administrator secrets and lead to server command execution.

CVSS severity9.8
Critical
EPSS probability95.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NoSQL injection in Rocket.Chat Server 3.11 through 3.13 allows remote attackers to take over accounts via a password-reset token oracle. The unauthenticated getPasswordPolicy method passes params.token directly into a MongoDB user query, letting operator objects reveal reset-token characters through success and error responses. Knowing a 2FA-disabled user's email enables account takeover; a second authenticated injection can expose administrator secrets and lead to server command execution.

The record

CVE
CVE-2021-22911
Published
May 27, 2021
Updated
Aug 3, 2024
Vendor
Rocket.Chat Technologies Corp.
Product
Rocket.Chat
Classifications
CWE-75, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Fixed in: 3.13.2, 3.12.4, 3.11.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Rocket.Chat Technologies Corp. · Rocket.Chatversion=Fixed in: 3.13.2, 3.12.4, 3.11.4

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-75Failure to Sanitize Special Elements into a Different Plane ('Special Element Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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