CVE-2026-106453
Description
A flaw was found in lz4-java. The library trusts the decompressed length header in compressed input before validating the input data, leading to uncontrolled memory allocation. A remote attacker can exploit this vulnerability by supplying a specially crafted input that specifies an excessively large output size. This action can exhaust available Java Virtual Machine (JVM) heap memory, resulting in an application crash and a Denial of Service (DoS).
Statement
This vulnerability is rated as Moderate impact because an attacker can trigger excessive memory allocation to cause a denial of service, with no impact on system confidentiality or integrity. Exploitation requires the target application to process untrusted compressed streams using specific length-prefixed decompression routines. Environments processing trusted inputs or applications managing their own output buffer allocations remain unaffected.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.3 | N/A | 5.3 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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