Allocation of Resources Without Limits or Throttling in Netty - CVE-2026-33871
Published: March 25, 2026
Vulnerability identifier: #VU124423
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-33871
CWE-ID: CWE-770
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 perform a denial of service (DoS) attack.
The vulnerability exists due to allocation of resources without limits or throttling in the "DefaultHttp2FrameReader" function within HTTP/2 server. A remote attacker can send a flood of CONTINUATION frames and cause a denial of service condition on the target system.
How to mitigate CVE-2026-33871
Install updates from vendor's website.