# CVE-2014-3120

## Summary

- **CVE ID:** CVE-2014-3120
- **Severity:** HIGH
- **CVSS Score:** 8.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** N/A
- **Published:** Jul 28, 2014
- **Last Modified:** Sep 16, 2026

## Description

The default configuration in Elasticsearch before 1.2 enables dynamic scripting, which allows remote attackers to execute arbitrary MVEL expressions and Java code via the source parameter to _search.  NOTE: this only violates the vendor's intended security policy if the user does not run Elasticsearch in its own independent virtual machine.

## Affected Products

- n/a — n/a (n/a)

## References

- [CNA](https://www.elastic.co/blog/logstash-1-4-3-released)
- [CNA](http://www.exploit-db.com/exploits/33370)
- [CNA](http://www.securityfocus.com/bid/67731)
- [CNA](http://www.osvdb.org/106949)
- [CNA](http://bouk.co/blog/elasticsearch-rce/)
- [CNA](http://www.rapid7.com/db/modules/exploit/multi/elasticsearch/script_mvel_rce)
- [CNA](https://www.found.no/foundation/elasticsearch-security/#staying-safe-while-developing-with-elasticsearch)
- [CNA](https://www.elastic.co/community/security/)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-3120)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 85.56%
- **EPSS Percentile:** 99.3

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Mar 25, 2022
- **Due Date:** Apr 15, 2022

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-17._