---
title: "CVE-2019-10156\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2019-10156?format=md
keywords: index, follow
---

# CVE-2019-10156

Publication date 30 July 2019

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.4 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2019-10156?format=md#impact-score)

Toggle side navigation

## Description

A flaw was discovered in the way Ansible templating was implemented in
versions before 2.6.18, 2.7.12 and 2.8.2, causing the possibility of
information disclosure through unexpected variable substitution. By taking
advantage of unintended variable substitution the content of any variable
may be disclosed.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| ansible | 19.04 disco | Fixed 2.7.8+dfsg-1ubuntu0.19.04.1 |
| 18.10 cosmic | Ignored end of life |
| 18.04 LTS bionic | Fixed 2.5.1+dfsg-1ubuntu0.1 |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.4 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.4 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10156)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-10156)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-10156)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-10156)

### Related Ubuntu Security Notices (USN)

+ [USN-4072-1](https://usn.ubuntu.com/USN-4072-1)
+ Ansible vulnerabilities
+ 24 July 2019

### Other references

* <https://github.com/ansible/ansible/pull/57188>
* <https://github.com/ansible/ansible/pull/57188/commits/8254c266f962d5febe46396d5083bb9c1da74840>
* <https://github.com/ansible/ansible/pull/57188/commits/fbda0028750a17a032d83dad9d1fb284f9ea68a4>
* <https://www.cve.org/CVERecord?id=CVE-2019-10156>