Inefficient Regular Expression Complexity in RocketChat by Rocket.Chat
CVE-2025-5892

5.3MEDIUM

Key Information:

Vendor

Rocket.Chat

Status
Rocketchat
Vendor
CVE Published:
9 June 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-5892?

A vulnerability exists in RocketChat versions up to 7.6.1, specifically within the parseMessage function in the parseMessage.js file. This issue stems from the manipulation of the argument line, resulting in inefficient processing of regular expressions. Attackers can exploit this vulnerability remotely, potentially leading to adverse impacts on system performance. The details regarding this flaw have been disclosed publicly, making it crucial for users of affected versions to take necessary precautions and apply any available patches.

Affected Version(s)

RocketChat 7.6.0

RocketChat 7.6.1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-5892 - Proof of Concept

References

https://vuldb.com/?id.311663
vdb-entrytechnical-description
https://vuldb.com/?ctiid.311663
signaturepermissions-required
https://vuldb.com/?submit.585751
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

mmmsssttt (VulDB User)
.
CVE-2025-5892 : Inefficient Regular Expression Complexity in RocketChat by Rocket.Chat