Is CVE-2022-31394 actively exploited?

CVE-2022-31394 has no public evidence of in-the-wild exploitation as of 2025-03-17.

What is the CVSS score for CVE-2022-31394?

CVE-2022-31394 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2022-31394?

Patch guidance is available from hyper security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2022-31394.

Fix CVE-2022-31394 - HIGH hyper hyper

Description

Hyperium Hyper before 0.14.19 does not allow for customization of the max_header_list_size method in the H2 third-party software, allowing attackers to perform HTTP2 attacks.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-770 CWE-770

Metadata

Primary Vendor: HYPER
Published: 2/21/2023
Last Modified: 3/17/2025
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-2022-31394. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2022-31394

View on NIST NVD

CVE-2022-31394 vulnerability