Missing Release of Resource after Effective Lifetime in Netty - CVE-2026-48043
Published: June 8, 2026
Vulnerability identifier: #VU133441
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-48043
CWE-ID: CWE-772
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Netty project
Affected software:
Netty
Netty
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a reference-count leak in DelegatingDecompressorFrameListener when processing HTTP/2 frames that cause the flow-controller to throw. A remote attacker can send crafted frames to cause a denial of service.
The issue may exhaust memory and eventually take down the JVM due to an out-of-memory error.
How to mitigate CVE-2026-48043
Install security update from vendor's website.