CVE-2026-48748

Netty is a network application framework for development of protocol servers and clients. Starting in version 4.2.0.Final and 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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/netty/netty/commit/75127cab731ee35068d1f0667bffa188bc332f5d
https://github.com/netty/netty/releases/tag/netty-4.2.15.Final	Release Notes
https://github.com/netty/netty/security/advisories/GHSA-4grm-h2qv-h6w6	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-48748
https://bugzilla.redhat.com/show_bug.cgi?id=2488441
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-48748.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-12 16:16

Updated : 2026-08-04 22:17

NVD link : CVE-2026-48748

Mitre link : CVE-2026-48748

CVE.ORG link : CVE-2026-48748

JSON object : View

Products Affected

netty

netty

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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