CVE-2026-67317
Received Received - Intake

Axios Fetch Adapter WHATWG ReadableStream Bypass

Publication date: 2026-08-01

Last updated on: 2026-08-01

Assigner: VulnCheck

Description
axios versions 1.7.0 before 1.18.0 fail to enforce maxBodyLength for WHATWG ReadableStream request bodies in the fetch adapter when Content-Length cannot be determined. Attackers can supply unknown-length stream data to bypass upload size limits and cause uncontrolled network egress or resource exhaustion.

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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-2026-67317
EUVD
EUVD-2026-51863

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
axios axios to 1.18.0 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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Executive Summary

Axios versions 1.7.0 to 1.18.0 have a flaw in their fetch adapter where maxBodyLength is not enforced for WHATWG ReadableStream request bodies when Content-Length cannot be determined. This allows attackers to bypass upload size limits by sending stream data of unknown length, potentially causing uncontrolled network egress or resource exhaustion.

Impact Analysis

This vulnerability could allow attackers to upload large amounts of data without size restrictions, leading to excessive network usage, server resource exhaustion, or denial of service. Applications relying on axios for uploads may be vulnerable if they use the fetch adapter with ReadableStream bodies.

Mitigation Strategies

Upgrade axios to version 1.18.0 or later to address the maxBodyLength enforcement issue with WHATWG ReadableStream bodies.

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