CVE-2025-4727 is a problematic vulnerability affecting Meteor versions up to 3.2.1, specifically within the Object.assign function in packages/ddp-server/livedata_server.js. This flaw, categorized as inefficient regular expression complexity (CWE-1333, CWE-400), can be triggered remotely by manipulating the forwardedFor argument. While the attack complexity is high and exploitation is difficult, successful exploitation could lead to a denial of service (CVSS 3.7 LOW). Although the exploit has been publicly disclosed, there is no evidence of active exploitation, nor are there Metasploit, Nuclei, or ExploitDB modules available, and community discussion is minimal. Upgrading to Meteor 3.2.2 addresses this issue.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.2.2CPE matchmatch criteria | cpe:2.3:a:meteor:meteor:*:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.