CVE-2026-106452

MEDIUM

5.3

CVSS v3

Description

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.2, net.jpountz.lz4.LZ4BlockInputStream refill() validates that the compressedLen field in a legacy LZ4Block header is nonnegative but allocates a compressed-input buffer of that attacker-controlled size before reading payload data, allowing a header-only stream to request a near-2 GiB allocation and exhaust the JVM heap. Canonical writers emit raw blocks when compression is not smaller than the original block, but vulnerable readers accept non-canonical oversized compressed blocks. This issue is fixed in version 1.11.2.

CWE-789

How to fix

Remediation Available

lz4-javaDebian

Fixed in:1.11.2+ds1-1CVE-2026-106452

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Exploit Intelligence

0.37%probability of exploitation in 30 days

29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-789 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2022-30522	High	7.5	90%	-	Fix
CVE-2025-27533	High	7.5	9.0%	-	Fix
CVE-2017-7651	High	7.5	5.1%	-	Fix
CVE-2026-49975	High	7.5	4.2%	-	Fix
CVE-2021-31811	Medium	5.5	3.6%	-	-
CVE-2021-27906	Medium	5.5	3.3%	-	Fix

Common questions

How do I fix CVE-2026-106452?

Upgrade lz4-java on debian unstable to 1.11.2+ds1-1 or later.

Is CVE-2026-106452 being actively exploited?

Not that we know of. CVE-2026-106452 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.37% is the estimated probability that it will be exploited in the next 30 days. That is higher than 29% of all scored CVEs.

How severe is CVE-2026-106452?

CVE-2026-106452 has a CVSS v3 base score of 5.3, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-106452 affect?

Published advisories record a fix for lz4-java (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-106452

Markdown

[![CVE-2026-106452](https://tridentstack.com/cve/badge/CVE-2026-106452.svg)](https://tridentstack.com/cve/CVE-2026-106452)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-106452"><img src="https://tridentstack.com/cve/badge/CVE-2026-106452.svg" alt="CVE-2026-106452"></a>

Check your Linux endpoints for this class of vulnerability

TridentStack Control continuously scans Linux endpoints for known vulnerabilities and deploys the fixes from the same console. 200 endpoints free forever, no credit card.

Patch your fleet free Start freeThis CVE lookup is free and always will be.

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-07.