SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-22911

A improper input sanitization vulnerability exists in Rocket.Chat server 3.11, 3.12 & 3.13 that could lead to unauthenticated NoSQL injection, resulting potentially in RCE.

EXPLOIT ×2 ✓CRITICAL 9.8EPSS 95.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 95.2%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.

Description

A improper input sanitization vulnerability exists in Rocket.Chat server 3.11, 3.12 & 3.13 that could lead to unauthenticated NoSQL injection, resulting potentially in RCE.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
95.24% probability · 100th percentile
Public exploits
2 in Exploit-DB · verified · first 7 June 2021
CISA KEV
Not listed
Weakness
CWE-75
Affected
rocket.chat/rocket.chat
Source
support@hackerone.com
EPSS trend
0%50%100%26 October 2026: 95.24%26 October 202626 October 2026

EPSS 95.2% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Public exploits (2)

Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.

EDB-IDTitleTypePublishedVerified
EDB-50108source ↗Rocket.Chat 3.12.1 - NoSQL Injection to RCE (Unauthenticated) (2)linux · enoxwebapps7 July 2021yes
EDB-49960source ↗Rocket.Chat 3.12.1 - NoSQL Injection (Unauthenticated)linux · enoxwebapps7 June 2021yes

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.