CVE-2020-35884

Name: CVE-2020-35884
Creator: NVD / NIST
Published: 2020-12-31T10:15:16.333+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.06%

Last modified Jun 17, 2026

CVE-2020-35884 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 1.06% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

EPSS Probability

1.06%

60.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-444

Affected Software

Vendor	Product	Versions
Tiny-Http Project	Tiny-Http	<= 0.7.0
Fedoraproject	Fedora	34
Fedoraproject	Fedora	35

References

Timeline

Published: Dec 31, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35884?

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.

How severe is CVE-2020-35884?

CVE-2020-35884 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.06% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35884?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-35884?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST