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Vulnerabilities

Vulnerability · CVE-2021-22911

Rocket.Chat server 3.11, 3.12 & 3.13 Remote Code Execution

Published Nov 14, 2023 · catalog updated Nov 14, 2023 · Rocket.Chat server 3.11, 3.12

Patch now

CVE-2021-22911 is in the CISA known-exploited catalog. Confirm Rocket.Chat server 3.11, 3.12 against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Rocket.Chat server 3.11, 3.12).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
95.24%
Remediation
Remediation guidance
Affected products
vendor rocket.chat rocket.chat

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. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor rocket.chat rocket.chatversion unspecified

How to fix CVE-2021-22911

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-22911 is in the CISA known-exploited catalog. Confirm Rocket.Chat server 3.11, 3.12 against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 95.24%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 14, 2023 · VulnCheck KEV

    Detected

    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. Initial-access exploit intelligence.

  2. Nov 14, 2023 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2021-22911

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-22911

    30-day exploitation probability 95.2%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.