CVE-2025-7783

Usage of unsafe random function in form-data for choosing boundary

Use of Insufficiently Random Values vulnerability in form-data allows HTTP Parameter Pollution (HPP). This vulnerability is associated with program files lib/form_data.Js.This issue affects form-data: < 2.5.4, 3.0.0 - 3.0.3, 4.0.0 - 4.0.3.

Affected

form-data

CVSS v4.0 CNA

9.4 CRITICALCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/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

CVSS v4.0 GitHub

9.4 CRITICALCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

EPSS

1.81% chance of exploitation in the next 30 days, 78th percentile

Published

2025-07-18

Updated

2025-11-03

Proof-of-concept exploits (1)

• benweissmann/CVE-2025-7783-poc31★ · 2025-10-31

Security advisories

• advisories/GHSA-fjxv-7rqg-78g4

References

• CVE Record
• NVD entry