Description
A flaw has been found in HdrHistogram up to 2.2.2. This affects the function org.HdrHistogram.AbstractHistogram.decodeFromByteBuffer of the file src/main/java/org/HdrHistogram/AbstractHistogram.java. This manipulation of the argument numberOfSignificantValueDigits causes uncontrolled memory allocation. The attack can only be executed locally. The exploit has been published and may be used. The actual existence of this vulnerability is currently in question. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack.
References (6)
Core 6
Core References
Exploit exploit
issue-tracking
https://github.com/HdrHistogram/HdrHistogram/issues/220
Product product
https://github.com/HdrHistogram/HdrHistogram/
Signature, Permissions Required signature
permissions-required
VDB-376280 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/376280/cti
Vdb Entry, Technical Description vdb-entry
technical-description
VDB-376280 | HdrHistogram AbstractHistogram.java memory allocation
https://vuldb.com/vuln/376280
Third Party Advisory third-party-advisory
CVE-2026-14684 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-14684
Third Party Advisory third-party-advisory
Submit #846754 | HdrHistogram 2.2.2 Denial of Service
https://vuldb.com/submit/846754
Scores
CVSS v3
3.3
EPSS
0.0012
EPSS Percentile
2.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-400
CWE-789
Status
published
Products (3)
None/HdrHistogram
2.2.0
None/HdrHistogram
2.2.1
None/HdrHistogram
2.2.2
Published
Jul 05, 2026
Tracked Since
Jul 05, 2026