CVE-2025-4727

MEDIUM EPSS 43.9%
Published May 15, 20251y ago · Modified Jun 17, 20261w ago
6.3 CVSS 4.0
Medium
Find Similar
Published May 15, 2025 1y ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/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
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
43.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-1333
CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 1

VendorProductVersionRange
meteormeteor* <3.2.2

References 7

  • github.com https://github.com/meteor/meteor/commit/f7ea6817b90952baaea9baace2a3b4366fee6a63
    Issue TrackingPatch
  • github.com https://github.com/meteor/meteor/issues/13713
    Broken Link
  • github.com https://github.com/meteor/meteor/pull/13721
    Issue TrackingPatch
  • github.com https://github.com/meteor/meteor/releases/tag/release/METEOR%403.2.2
    Release Notes
  • vuldb.com https://vuldb.com/?ctiid.309029
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.309029
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.570441
    ExploitThird Party AdvisoryVDB Entry

Remediation

  • github.com https://github.com/meteor/meteor/commit/f7ea6817b90952baaea9baace2a3b4366fee6a63
    Issue TrackingPatch
  • github.com https://github.com/meteor/meteor/pull/13721
    Issue TrackingPatch