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High, CVSS 8.8

LZ4 Java Compression has Out-of-bounds memory operations which can cause DoS

CVE-2025-12183GHSA-vqf4-7m7x-wgfc

What to do

Partial vendor fix. Follow the primary source's mitigation guidance and check back for a fix.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • Maven net.jpountz.lz4:lz4

    Affected
    <= 1.3.0
    Fixed in
    no fixed version recorded

  • Maven org.lz4:lz4-pure-java

    Affected
    <= 1.8.0
    Fixed in
    no fixed version recorded

  • Maven at.yawk.lz4:lz4-java

    Affected
    < 1.8.1
    Fixed in
    1.8.1

  • Maven org.lz4:lz4-java

    Affected
    < 1.8.1
    Fixed in
    1.8.1

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
8.8 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N · score source
EPSS
  • CVE-2025-12183: 0.75% estimated exploitation activity in the next 30 days; percentile 54.90 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Out-of-bounds memory operations in org.lz4:lz4-java 1.8.0 and earlier allow remote attackers to cause denial of service and read adjacent memory via untrusted compressed input. This is fixed in a forked release: at.yawk.lz4:lz4-java version 1.8.1. The original project has been archived: https://github.com/lz4/lz4-java, and Sonatype has added a redirect from org.lz4:lz4-java:1.8.1 to the new group ID.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-vqf4-7m7x-wgfc

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2025-12183

Advisory: LZ4 Java Compression has Out-of-bounds memory operations which can cause DoS
IDs: CVE-2025-12183, GHSA-vqf4-7m7x-wgfc
Record: https://patchnext.com/advisories/cve-2025-12183 (revision 1, source checked 26 Oct 2026, 16:43 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.8)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: at.yawk.lz4:lz4-java 1.8.1; org.lz4:lz4-java 1.8.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven net.jpountz.lz4:lz4: affected <= 1.3.0
- Maven org.lz4:lz4-pure-java: affected <= 1.8.0
- Maven at.yawk.lz4:lz4-java: affected < 1.8.1; fixed in 1.8.1
- Maven org.lz4:lz4-java: affected < 1.8.1; fixed in 1.8.1

## Suggested inspection (read-only)
- Maven net.jpountz.lz4:lz4: check the installed version with your package manager.
- Maven org.lz4:lz4-pure-java: check the installed version with your package manager.
- Maven at.yawk.lz4:lz4-java: check the installed version with your package manager.
- Maven org.lz4:lz4-java: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on net.jpountz.lz4:lz4, org.lz4:lz4-pure-java, at.yawk.lz4:lz4-java, org.lz4:lz4-java.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-vqf4-7m7x-wgfc (GitHub-reviewed advisory GHSA-vqf4-7m7x-wgfc lists affected ranges: Maven at.yawk.lz4:lz4-java >=0 =0 =0 =0 <=1.3.0)

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