---
title: "CVE-2020-13942: Remote Code Execution in Apache Unomi | CubePath"
description: "It is possible to inject malicious OGNL or MVEL scripts into the /context.json public endpoint. This was partially fixed in 1.5.1 but a new attack vector…"
language: en
source: https://cubepath.com/security/cve/CVE-2020-13942
---

# CVE-2020-13942: Remote Code Execution in Apache Unomi | CubePath

## Description

It is possible to inject malicious OGNL or MVEL scripts into the /context.json public endpoint. This was partially fixed in 1.5.1 but a new attack vector was found. In Apache Unomi version 1.5.2 scripts are now completely filtered from the input. It is highly recommended to upgrade to the latest available version of the 1.5.x release to fix this problem.

Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-13942)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.68516 (68.5% probability)

Percentile

99.3%

Scores of

Nov 10, 2026

Model

v2026.06.15

### Weakness (CWE)

CWE catalog version 5.0.

CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license.

- [CWE-20](https://cwe.mitre.org/data/definitions/20.html) Improper Input Validation

## Affected products

Products listed in the CVE record, as the CNA published them.

- Apache Unomi

  - affected: unspecified up to before 1.5.2

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [unomi.apache.org./security/cve-2020-13942.txt](http://unomi.apache.org./security/cve-2020-13942.txt)
- [\[unomi-dev\] 20201124 CVE-2020-13942: Remote Code Execution in Apache Unomi](https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cdev.unomi.apache.org%3E)  (lists.apache.org) mailing-list
- [\[unomi-users\] 20201124 CVE-2020-13942: Remote Code Execution in Apache Unomi](https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cusers.unomi.apache.org%3E)  (lists.apache.org) mailing-list
- [\[unomi-users\] 20201124 Apache Unomi 1.5.4 Release](https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cusers.unomi.apache.org%3E)  (lists.apache.org) mailing-list
- [\[unomi-dev\] 20201124 Apache Unomi 1.5.4 Release](https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cdev.unomi.apache.org%3E)  (lists.apache.org) mailing-list
- [\[oss-security\] 20201124 CVE-2020-13942: Remote Code Execution in Apache Unomi](http://www.openwall.com/lists/oss-security/2020/11/24/5)  (openwall.com) mailing-list
- [\[announce\] 20201124 CVE-2020-13942: Remote Code Execution in Apache Unomi](https://lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a56b4d0f%40%3Cannounce.apache.org%3E)  (lists.apache.org) mailing-list
- [advisory.checkmarx.net/advisory/CX-2020-4284](https://advisory.checkmarx.net/advisory/CX-2020-4284)
- [\[unomi-commits\] 20210428 svn commit: r1889256 - in /unomi/website: contribute-release-guide.html documentation.html download.html index.html security/cve-2021-31164.txt](https://lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9a363460%40%3Ccommits.unomi.apache.org%3E)  (lists.apache.org) mailing-list

## Timeline

1. ID reserved Jun 8, 2020
2. Record published Nov 24, 2020
3. Record last updated Feb 13, 2025

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:05 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)