CVE-2019-10156

Name: CVE-2019-10156
Creator: NVD / NIST
Published: 2019-07-30T23:15:12.043+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.76%

Last modified Jun 17, 2026

CVE-2019-10156 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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.. EPSS estimates a 1.76% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

1.76%

75.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Ansible	< 2.6.18
Redhat	Ansible	>= 2.7.0, < 2.7.12
Redhat	Ansible	>= 2.8.0, < 2.8.2
Redhat	Openstack	13
Redhat	Openstack	14
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

https://access.redhat.com/errata/RHSA-2019:3744Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:3789Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10156Issue Tracking, Vendor Advisory
https://github.com/ansible/ansible/pull/57188Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00016.htmlVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00023.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2021/dsa-4950Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3744Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:3789Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10156Issue Tracking, Vendor Advisory
https://github.com/ansible/ansible/pull/57188Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00016.htmlVendor Advisory
https://lists.debian.org/debian-lts-announce/2021/01/msg00023.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2021/dsa-4950Third Party Advisory

Timeline

Published: Jul 30, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-10156?

How severe is CVE-2019-10156?

CVE-2019-10156 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.76% probability of exploitation in the next 30 days.

How do I fix CVE-2019-10156?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-10156?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST