CVE-2025-4727
Meteor DDP-Server Regular Expression Complexity Remote Vulnerability
Description
A vulnerability was found in Meteor up to 3.2.1 and classified as problematic. This issue affects the function Object.assign of the file packages/ddp-server/livedata_server.js. The manipulation of the argument forwardedFor leads to inefficient regular expression complexity. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.2 is able to address this issue. The identifier of the patch is f7ea6817b90952baaea9baace2a3b4366fee6a63. It is recommended to upgrade the affected component.
INFO
Published Date :
May 15, 2025, 11:15 p.m.
Last Modified :
June 23, 2025, 3:14 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-4727.
| URL | Resource |
|---|---|
| https://github.com/meteor/meteor/commit/f7ea6817b90952baaea9baace2a3b4366fee6a63 | Patch Issue Tracking |
| https://github.com/meteor/meteor/issues/13713 | Broken Link |
| https://github.com/meteor/meteor/pull/13721 | Issue Tracking Patch |
| https://github.com/meteor/meteor/releases/tag/release/METEOR%403.2.2 | Release Notes |
| https://vuldb.com/?ctiid.309029 | Permissions Required VDB Entry |
| https://vuldb.com/?id.309029 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.570441 | Exploit Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.570441 | Exploit Third Party Advisory VDB Entry |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-4727 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-4727 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 23, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:meteor:meteor:*:*:*:*:*:*:*:* versions up to (excluding) 3.2.2 Added Reference Type VulDB: https://github.com/meteor/meteor/commit/f7ea6817b90952baaea9baace2a3b4366fee6a63 Types: Issue Tracking, Patch Added Reference Type VulDB: https://github.com/meteor/meteor/issues/13713 Types: Broken Link Added Reference Type VulDB: https://github.com/meteor/meteor/pull/13721 Types: Issue Tracking, Patch Added Reference Type VulDB: https://github.com/meteor/meteor/releases/tag/release/METEOR%403.2.2 Types: Release Notes Added Reference Type VulDB: https://vuldb.com/?ctiid.309029 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.309029 Types: Third Party Advisory, VDB Entry Added Reference Type CISA-ADP: https://vuldb.com/?submit.570441 Types: Exploit, Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.570441 Types: Exploit, Third Party Advisory, VDB Entry -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 16, 2025
Action Type Old Value New Value Added Reference https://vuldb.com/?submit.570441 -
New CVE Received by [email protected]
May. 15, 2025
Action Type Old Value New Value Added Description A vulnerability was found in Meteor up to 3.2.1 and classified as problematic. This issue affects the function Object.assign of the file packages/ddp-server/livedata_server.js. The manipulation of the argument forwardedFor leads to inefficient regular expression complexity. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.2 is able to address this issue. The identifier of the patch is f7ea6817b90952baaea9baace2a3b4366fee6a63. It is recommended to upgrade the affected component. Added CVSS V4.0 AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Added CVSS V2 (AV:N/AC:H/Au:N/C:N/I:N/A:P) Added CWE CWE-400 Added CWE CWE-1333 Added Reference https://github.com/meteor/meteor/commit/f7ea6817b90952baaea9baace2a3b4366fee6a63 Added Reference https://github.com/meteor/meteor/issues/13713 Added Reference https://github.com/meteor/meteor/pull/13721 Added Reference https://github.com/meteor/meteor/releases/tag/release/METEOR%403.2.2 Added Reference https://vuldb.com/?ctiid.309029 Added Reference https://vuldb.com/?id.309029 Added Reference https://vuldb.com/?submit.570441
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-4727 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-4727
weaknesses.