CVE-2025-7783

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

CVSS 9.4 CRITICALEPSS 1.7%CWE-330

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.

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

Affected products

form-data

public PoCs found — 1

githubgithub.com/benweissmann/CVE-2025-7783-poc★ 32

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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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