CVE-2026-48748 HIGH

CVE-2026-48748: Netty HTTP/3 QPACK Blocked Streams Memory Exhaustion

Vendor Netty
Product netty
Weakness CWE-770 · Uncontrolled resource consumption
Published June 12, 2026
Last update June 30, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, a memory exhaustion vulnerability in the Netty HTTP/3 codec allows the creation of an infinite number of blocked streams, which can cause OOM error. Version 4.2.15.Final patches the issue.

Key dates

02Disclosure timeline

June 12, 2026 CVE published
June 30, 2026 Record updated