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Vulnerabilities

Vulnerability · CVE-2023-23917

A prototype pollution vulnerability exists in Rocket.Chat server <5.2.0 that could allow an attacker to a RCE under the admin account.

Published Feb 23, 2023 · catalog updated Oct 24, 2026 · A prototype pollution vulnerability

Last checked Oct 25, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-23917. EPSS is 0.98%. Act only if a listed version of A prototype pollution vulnerability is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A prototype pollution vulnerability).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.98%
Remediation
Version ranges on file
Affected products
cpe rocket.chat/rocket.chat

A prototype pollution vulnerability exists in Rocket.Chat server <5.2.0 that could allow an attacker to a RCE under the admin account. Any user can create their own server in your cloud and become an admin so this vulnerability could affect the cloud infrastructure. This attack vector also may increase the impact of XSS to RCE which is dangerous for self-hosted users as well.

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.

  • cpe rocket.chat/rocket.chat< 5.2.0

How to fix CVE-2023-23917

  • Upgrade

    CVE-2023-23917 lists a fix boundary at 5.2.0. Compare the installed build with that boundary before you change production.

  • Version check

    Affected < 5.2.0

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

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

Should you patch?

No confirmed exploitation is on record for CVE-2023-23917. EPSS is 0.98%. Act only if a listed version of A prototype pollution vulnerability is installed.

Which versions are affected?

Compare what you have installed with < 5.2.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution); CWE-77: Command Injection. EPSS 0.98%. There is no CISA KEV listing. 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. Feb 23, 2023 · NIST NVD

    Detected

    A prototype pollution vulnerability exists in Rocket.Chat server <5.2.0 that could allow an attacker to a RCE under the admin account. Any user can create their own server in your cloud and become an admin so this vulnerability could affect the cloud infrastructure. This attack vector also may increase the impact of XSS to RCE which is dangerous for self-hosted users as well.

  2. Oct 24, 2026 · NIST NVD

    Updated

    A prototype pollution vulnerability exists in Rocket.Chat server <5.2.0 that could allow an attacker to a RCE under the admin account. Any user can create their own server in your cloud and become an admin so this vulnerability could affect the cloud infrastructure. This attack vector also may increase the impact of XSS to RCE which is dangerous for self-hosted users as well.

Sources

  • CVE.orgVulnerability recordCVE-2023-23917

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2023-23917

    A prototype pollution vulnerability exists in Rocket.Chat server <5.2.0 that could allow an attacker to a RCE under the admin account. Any user can create their own server in your cloud and become an admin so this vulnerability could affect the cloud infrastructure. This attack v

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 25, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgOct 24, 2026
  • NIST NVDOct 24, 2026