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[CVE-2025-12183] HIGH: lz4-java 1.8.0 - Out-of-bounds memory and information disclosure

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
42/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
java
Domain
security

Research direction

Start by locating the org.lz4:lz4-java 1.8.0 dependency used to build workers.jar. Check the available fixed versions for both CVE-2025-12183 and CVE-2025-66566, then rerun the container vulnerability scan; done means the vulnerable dependency is addressed and the scan no longer reports these CVEs.

Written by the indexing model from the issue text.

Description

security vulnerability

Vulnerability Report

Field Value
CVEs CVE-2025-12183, CVE-2025-66566
Severity HIGH (2 CVEs)
Library org.lz4:lz4-java
Source workers.jar
Installed Version 1.8.0
Fixed Version 1.8.1 (CVE-2025-12183); unknown (CVE-2025-66566)
Summary

Two vulnerabilities in lz4-java:

  1. CVE-2025-12183 - Out-of-bounds memory operations lead to denial of service and information disclosure
  2. CVE-2025-66566 - Information Disclosure via Insufficient Output Buffer Clearing
References

Filed from container vulnerability scan of workers.jar

Dominant language
Java
Stars
12
Forks
10
Avg merge
1d 10h
Merged PRs (30d)
2

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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