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CVE-2026-42039

Axios: unbounded recursion in toFormData causes DoS via deeply nested request data

Impact

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, 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. This vulnerability is fixed in 1.15.1 and 0.31.1.

Affected packages

EcosystemPackageAffectedFixed in
npmaxios>= 1.0.0, < 1.15.11.15.1

Affected products

VendorProductAffected versions
AxiosAxios
before 0.31.1
from 1.0.0 before 1.15.1

Weakness classification

CWE-674CWE-770

References