Axios 1.13.0 HTTP/2 maxBodyLength Bypass in Node HTTP Adapter
CVE-2026-67318 Published on August 1, 2026
axios 1.13.0 before 1.18.0 maxBodyLength Bypass via HTTP/2
axios versions >=1.13.0 (Node.js HTTP adapter) fail to enforce the configured maxBodyLength limit on streamed request bodies when requests are sent with httpVersion: 2. Because Node's HTTP/2 request API does not honor the maxBodyLength option and axios's byte-counting stream wrapper is gated on maxRedirects === 0, an attacker who controls a stream passed to axios can cause the application to transmit outbound data exceeding the configured finite maxBodyLength. Impact is limited to resource consumption and policy bypass (excess egress, upstream quota consumption, limited availability); it does not enable code execution, credential disclosure, or request-destination control. Calls using the default maxBodyLength: -1 and browser adapters are not affected.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software 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.
CVE-2026-67318 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-67318
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Affected Versions
axios:- Version 1.13.0 and below 1.18.0 is affected.
- Version 1.18.0 is unaffected.