HdrHistogram up to 2.2.2 AbstractHistogram.java numberOfSignificantValueDigits memory allocation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.0$0-$5k1.53+

Summaryinfo

A vulnerability, which was classified as problematic, was found in HdrHistogram up to 2.2.2. This vulnerability affects the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. Such manipulation of the argument numberOfSignificantValueDigits leads to memory allocation. This vulnerability is referenced as CVE-2026-14684. The attack can only be performed from a local environment. Furthermore, an exploit is available. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability was found in HdrHistogram up to 2.2.2. It has been rated as problematic. Affected by this issue is the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. The manipulation of the argument numberOfSignificantValueDigits with an unknown input leads to a memory allocation vulnerability. Using CWE to declare the problem leads to CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. Impacted is availability.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-14684. The exploitation is known to be easy. The attack needs to be approached locally. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept. The project was informed of the problem early through an issue report but has not responded yet.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

07/04/2026 Advisory disclosed
07/04/2026 +0 days VulDB entry created
07/04/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 220
Status: Not defined

CVE: CVE-2026-14684 (🔒)
GCVE (CVE): GCVE-0-2026-14684
GCVE (VulDB): GCVE-100-376280
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/04/2026 06:45
Changes: 07/04/2026 06:45 (57)
Complete: 🔍
Submitter: sara11h
Cache ID: 216::103

Submitinfo

Accepted

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