CVE-2026-67321
Received Received - Intake

axios Form Data Serialization RangeError DoS Vulnerability

Publication date: 2026-08-01

Last updated on: 2026-08-01

Assigner: VulnCheck

Description
axios before 0.33.0 contains an incomplete depth-limit bypass in toFormData.js when serializing objects with top-level keys ending in '{}'. Attackers who control object keys and nested values passed to axios form or parameter serialization can trigger a RangeError from JSON.stringify, causing denial of service in the affected request path.

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Meta Information

Published
2026-08-01
Last Modified
2026-08-01
Generated
2026-08-01
AI Q&A
2026-08-01
EPSS Evaluated
N/A
NVD
CVE-2026-67321
EUVD
EUVD-2026-51812

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
axios axios to 0.33.0 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-674 The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

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Executive Summary

axios before version 0.33.0 has a flaw in toFormData.js where objects with top-level keys ending in '{}' are not properly serialized. Attackers who control object keys and nested values can trigger a RangeError during JSON.stringify, causing a denial of service in the affected request path.

Detection Guidance

This vulnerability is specific to the axios library version before 0.33.0. To detect it, check the installed version of axios in your project using commands like 'npm list axios' or 'yarn list axios'. If the version is below 0.33.0, the system is vulnerable.

Impact Analysis

This vulnerability can cause applications using affected axios versions to crash or become unresponsive when processing malicious input. It may lead to service disruptions, failed requests, or degraded performance in systems relying on axios for form or parameter serialization.

Mitigation Strategies

Immediately update axios to version 0.33.0 or later using 'npm update axios' or 'yarn upgrade axios'. Review any code that passes user-controlled object keys to axios serialization functions to ensure proper handling of edge cases.

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