Uncontrolled Memory Allocation Vulnerability in HdrHistogram by HdrHistogram
CVE-2026-14683

4.8MEDIUM

Key Information:

Vendor: HdrHistogram
Status: Hdrhistogram
Vendor: CVE Published:; 4 July 2026

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👾 Exploit Exists🟡 Public PoC

What is CVE-2026-14683?

A vulnerability exists in HdrHistogram versions up to 2.2.2 within the function org.HdrHistogram.AbstractHistogram.decodeFromCompressedByteBuffer. This flaw can lead to uncontrolled memory allocation due to manipulation of the argument lengthOfCompressedContents. The issue can only be exploited locally, and although it has been reported to the project, no response has been received. The vulnerability is publicly known and may pose a risk to systems using the affected versions.

Affected Version(s)

HdrHistogram 2.2.0

HdrHistogram 2.2.1

HdrHistogram 2.2.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-14683 - Proof of Concept