CVE-2026-42034: Axios' HTTP adapter-streamed uploads bypass maxBodyLength when maxRedirects: 0

May 5, 2026

For stream request bodies, maxBodyLength is bypassed when maxRedirects is set to 0 (native http/https transport path). Oversized streamed uploads are sent fully even when the caller sets strict body limits.

References

github.com/advisories/GHSA-5c9x-8gcm-mpgx
github.com/axios/axios/security/advisories/GHSA-5c9x-8gcm-mpgx
nvd.nist.gov/vuln/detail/CVE-2026-42034

Code Behaviors & Features

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