Is CVE-2020-35863 actively exploited?

CVE-2020-35863 has no public evidence of in-the-wild exploitation as of 2024-11-21.

What is the CVSS score for CVE-2020-35863?

CVE-2020-35863 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2020-35863?

Patch guidance is available from hyper security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-35863.

Fix CVE-2020-35863 - CRITICAL hyper hyper

Description

An issue was discovered in the hyper crate before 0.12.34 for Rust. HTTP request smuggling can occur. Remote code execution can occur in certain situations with an HTTP server on the loopback interface.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-444

Metadata

Primary Vendor: HYPER
Published: 12/31/2020
Last Modified: 11/21/2024
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

hyper : hyper

Remediation Guidance

Executive Summary

Cite this page

CVE-2020-35863. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2020-35863

View on NIST NVD

CVE-2020-35863 vulnerability