CVE-2025-23061
$where operator vulnerability in mongoose

$where operator No known exploit Fixable By Resolved Security

What is CVE-2025-23061 About?

This vulnerability in Mongoose, present in versions prior to 8.9.5, 7.8.4, and 6.13.6, is due to the improper use of the $where operator. It allows for arbitrary JavaScript code execution in MongoDB queries, potentially leading to code injection attacks and unauthorized data manipulation. This is an incomplete fix for a previous vulnerability, indicating a continued risk and ease of exploitation if parameters are not properly sanitized.

Affected Software

  • mongoose
    • >8.0.0-rc0, <8.9.5
    • >7.0.0-rc0, <7.8.4
    • <6.13.6

Technical Details

This vulnerability is an incomplete fix for CVE-2024-53900 and similarly arises from the MongoDB $where operator's capability to execute arbitrary JavaScript code. In the affected Mongoose versions, if unsanitized or inadequately sanitized user input is used to construct a `$where` clause, an attacker can inject malicious JavaScript. This injected code will be executed by the MongoDB server as part of the query processing. The flaw indicates that the previous remediation for CVE-2024-53900 did not fully address all potential input vectors or contexts where user input could bypass controls and reach the `$where` operator in an unescaped manner, thereby reintroducing the code injection vulnerability.

What is the Impact of CVE-2025-23061?

Successful exploitation may allow attackers to execute arbitrary code within the database context, leading to unauthorized access, modification, or deletion of sensitive data, and potentially a full compromise of the database system.

What is the Exploitability of CVE-2025-23061?

Exploitation of this vulnerability involves providing malicious input to a vulnerable MongoDB query utilizing the `$where` operator, bypassing the incomplete fix for CVE-2024-53900. The complexity is medium, as it requires crafting specific payloads that exploit the lingering weaknesses. Authentication requirements are dependent on whether the input point is accessible pre-authentication or requires a valid session. Privilege requirements are minimal beyond the ability to interact with the application in a way that influences database queries. This can be exploited remotely if the application is publicly accessible. Risk factors include applications that still do not adequately sanitize user input before it is incorporated into MongoDB `$where` clauses, despite attempts to patch such vulnerabilities.

What are the Known Public Exploits?

PoC Author Link Commentary
No known exploits

What are the Available Fixes for CVE-2025-23061?

A Fix by Resolved Security Exists!

About the Fix from Resolved Security

The patch fixes CVE-2025-23061 by introducing a function that recursively checks and throws an error if the $where operator is present in the match object provided to Mongoose's populate() function. This prevents the exploitation of the dangerous $where operator, which could otherwise allow arbitrary JavaScript execution during population, thus blocking a potential remote code execution vector.

Available Upgrade Options

  • mongoose
    • <6.13.6 → Upgrade to 6.13.6
  • mongoose
    • >7.0.0-rc0, <7.8.4 → Upgrade to 7.8.4
  • mongoose
    • >8.0.0-rc0, <8.9.5 → Upgrade to 8.9.5

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Additional Resources

What are Similar Vulnerabilities to CVE-2025-23061?

Similar Vulnerabilities: CVE-2024-53900 , CVE-2012-6634 , CVE-2013-4660 , CVE-2013-6858 , CVE-2015-0205