CVE•Published 2023-02-23•Modified 2026-10-24•1 article on news•5 live references•NVD data

CVE-2023-23917Rocket.chat · Rocket.chat

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 38% of all CVEs

Weaknesses (CWE)

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Description

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.

Timeline

Published 2023-02-23

Modified 2026-10-24

External references

NVD MITRE GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag343 hosts

vuln:CVE-2023-23917

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Rocket.chat Rocket.chat"

All exposed Rocket.chat Rocket.chat instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Rocket.chat"

HTTP body or banner mentions "Rocket.chat" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2023-23917