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CVE-2026-42034 is a medium severity vulnerability with a CVSS score of 5.3. No known exploits currently, and patches are available.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
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.
Relevant flow in lib/adapters/http.js:
This creates a path-specific bypass for streamed uploads.
Environment:
Steps:
Observed:
Control checks:
Type: DoS / uncontrolled upstream upload / resource exhaustion. Impacted: Node.js services using streamed request bodies with maxBodyLength expecting hard enforcement, especially when following Axios guidance to use maxRedirects: 0 for streams.
| Vendor | Product |
|---|---|
| Axios | Axios |
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