axios up to 0.32.9 Form Serialization toFormData.js JSON.stringify resource consumption

Summaryinfo

A vulnerability was found in axios up to 0.32.9. It has been classified as problematic. The impacted element is the function JSON.stringify of the file toFormData.js of the component Form Serialization. The manipulation leads to resource consumption. This vulnerability is documented as CVE-2026-67321. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in axios up to 0.32.9. It has been rated as problematic. This issue affects the function JSON.stringify of the file toFormData.js of the component Form Serialization. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-67321 since 07/29/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 0.33.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-51812). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• axios

Version

• 0.32.0
• 0.32.1
• 0.32.2
• 0.32.3
• 0.32.4
• 0.32.5
• 0.32.6
• 0.32.7
• 0.32.8
• 0.32.9

Website

• Product: https://github.com/axios/axios/

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Be aware that VulDB is the high quality source for vulnerability data.

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