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HdrHistogram CVE-2026-14683

| EUVDEUVD-2026-41705 LOW
Uncontrolled Resource Consumption (CWE-400)
2026-07-04 cna@vuldb.com GHSA-xw83-8gp3-pg5q
Java Denial Of Service
1.9
CVSS 4.0 · Vendor: vuldb

Severity by source

Vendor (vuldb) PRIMARY
1.9 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
3.3 LOW

Local attack vector and low privileges required to invoke the function; only local availability impact with no scope change, confidentiality, or integrity effects.

3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
4.0 AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (vuldb).

CVSS VectorVendor: vuldb

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Jul 04, 2026 - 23:31 vuln.today

DescriptionCVE.org

A vulnerability was detected in HdrHistogram up to 2.2.2. Affected by this issue is the function org.HdrHistogram.AbstractHistogram.decodeFromCompressedByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. The manipulation of the argument lengthOfCompressedContents results in uncontrolled memory allocation. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

AnalysisAI

Uncontrolled memory allocation in HdrHistogram up to version 2.2.2 allows a local attacker with low-privilege access to crash a dependent Java application by supplying a crafted lengthOfCompressedContents value to the decodeFromCompressedByteBuffer function, exhausting JVM heap space and causing a denial-of-service. A public proof-of-concept exists (E:P per CVSS 4.0), though the vulnerability is not listed in CISA KEV, indicating no confirmed widespread active exploitation. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Gain low-privilege local access
Delivery
Craft compressed buffer with inflated lengthOfCompressedContents
Exploit
Supply buffer to vulnerable application input
Execution
Application calls decodeFromCompressedByteBuffer without validation
Persist
JVM allocates unbounded memory
Impact
Heap exhausted, application crashes (DoS)
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Vulnerability AssessmentAI

Exploitation Local system access with at least low-privilege credentials is required (AV:L/PR:L per CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 1.9 (AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N) accurately characterizes this as a low-severity issue. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario A local attacker with a low-privilege account on a host running a Java application that exposes HdrHistogram deserialization to user-controlled input crafts a malicious compressed byte buffer containing an inflated `lengthOfCompressedContents` value far exceeding available heap. The application calls `decodeFromCompressedByteBuffer` with this input, the JVM attempts to satisfy the allocation, exhausts heap space, and throws an `OutOfMemoryError`, crashing the application or its thread pool. …
Remediation No vendor-released patch has been identified at time of analysis - the project maintainer had not responded to the disclosure report, and no fixed release version appears in any reference. … Detailed patch versions, workarounds, and compensating controls in full report.
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CVE-2026-14683 vulnerability details – vuln.today
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