CVE-2025-7783

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

State: Published
Severity: 9.4 Critical
Published: Jul 18, 2025
Updated: Nov 3, 2025
Reserved: Jul 18, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N	harborist

Weaknesses

CWE-330 Use of Insufficiently Random Values

Affected Products

Product	Versions
form-data	< 2.5.4Affected 3.0.0 - 3.0.3Affected 4.0.0 - 4.0.3Affected

References

https://github.com/form-data/form-data/security/advisories/GHSA-fjxv-7rqg-78g4third-party-advisory
https://github.com/form-data/form-data/commit/3d1723080e6577a66f17f163ecd345a21d8d0fd0patch
https://lists.debian.org/debian-lts-announce/2025/07/msg00023.html

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