CVE-2026-42039: Axios: unbounded recursion in toFormData causes DoS via deeply nested request data

May 5, 2026

toFormData recursively walks nested objects with no depth limit, so a deeply nested value passed as request data crashes the Node.js process with a RangeError.

References

github.com/advisories/GHSA-62hf-57xw-28j9
github.com/axios/axios
github.com/axios/axios/security/advisories/GHSA-62hf-57xw-28j9
nvd.nist.gov/vuln/detail/CVE-2026-42039

Code Behaviors & Features

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