What’s Vulnerable › Vulnerabilities

CVE-2025-7783: Usage of unsafe random function in form-data for choosing boundary

• Severity: critical (CVSS 9.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-07-18 · updated 2026-06-17
• Weakness: CWE-330

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.

Affected products

• Npm Form-Data: before 2.5.4; from 3.0.0 before 3.0.4; from 4.0.0 before 4.0.4 — fixed in 2.5.4, 3.0.4, 4.0.4

How to fix

Upgrade to a fixed version: Npm Form-Data 2.5.4, 3.0.4, 4.0.4. Check the vendor advisory for mitigations.

References

• https://github.com/form-data/form-data/commit/3d1723080e6577a66f17f163ecd345a21d8d0fd0
• https://github.com/form-data/form-data/security/advisories/GHSA-fjxv-7rqg-78g4
• https://lists.debian.org/debian-lts-announce/2025/07/msg00023.html
• https://github.com/form-data/form-data/security/advisories/GHSA-fjxv-7rqg-78g4

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