CVE-2026-42039

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

State
Published
Severity
6.9 Medium
Published
Apr 24, 2026
Updated
Sep 10, 2026
Reserved
Apr 23, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
4.06.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:NGitHub_M
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hredhat-SADP

Weaknesses

  • CWE-674 Uncontrolled Recursion
  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
axiosaxios
  • >= 1.0.0, < 1.15.1Affected
  • < 0.31.1Affected

References

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