Resource exhaustion in Hdrhistogram
CVE-2026-14683
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. It is still unclear if this vulnerability genuinely exists. This issue is disputed due to the potential lack of crossing of security boundaries and the pre-requisites for a successful attack.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.001 (2.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- N/a Hdrhistogram — versions 2.2.0, 2.2.1, 2.2.2
Weakness classification (CWE)
References
- cna@vuldb.com (product)
- cna@vuldb.com (issue-tracking, exploit)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (third-party-advisory)
- cna@vuldb.com (technical-description, vdb-entry)
- cna@vuldb.com (signature, permissions-required)
Frequently asked questions
- What is CVE-2026-14683?
- CVE-2026-14683 is a low-severity vulnerability in Hdrhistogram, classified under Uncontrolled Resource Consumption. CVSS score: 3.3/10. Published 2026-07-04.
- How severe is CVE-2026-14683?
- Low severity. CVSS v3 base score is 3.3 out of 10.