CVE-2026-42039

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploit Prediction

0.0007

Probability of exploitation

0.20%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-674 CWE-674

Affected Products

Vendor	Product	Versions
axios	axios	< 0.31.1
axios	axios	1.0.0 — 1.15.1

References

Advisories & Patches

https://github.com/axios/axios/security/advisories/GHSA-62hf-57xw-28j9 https://github.com/axios/axios/security/advisories/GHSA-62hf-57xw-28j9

Exploits

https://github.com/axios/axios/security/advisories/GHSA-62hf-57xw-28j9 https://github.com/axios/axios/security/advisories/GHSA-62hf-57xw-28j9

Frequently Asked Questions

What is CVE-2026-42039? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-42039? +

CVE-2026-42039 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0007, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-42039? +

CVE-2026-42039 affects products from axios, specifically: axios. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-42039? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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