CVE-2018-10855

Name: CVE-2018-10855
Creator: NVD / NIST
Published: 2018-07-03T01:29:00.58+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 3.09%

Last modified Jun 17, 2026

CVE-2018-10855 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Ansible 2.5 prior to 2.5.5, and 2.4 prior to 2.4.5, do not honor the no_log task flag for failed tasks. When the no_log flag has been used to protect sensitive data passed to a task from being logged, and that task does not run successfully, Ansible will expose sensitive data in log files and on the terminal of the user running Ansible.. EPSS estimates a 3.09% chance of exploitation in the next 30 days.

Description

Ansible 2.5 prior to 2.5.5, and 2.4 prior to 2.4.5, do not honor the no_log task flag for failed tasks. When the no_log flag has been used to protect sensitive data passed to a task from being logged, and that task does not run successfully, Ansible will expose sensitive data in log files and on the terminal of the user running Ansible.

Metrics

CVSS 3.1

5.9/10

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

EPSS Probability

3.09%

86.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Ansible Engine	>= 2.4, < 2.4.5
Redhat	Ansible Engine	> 2.5, <= 2.5.5
Redhat	Ansible Engine	2.0
Redhat	Cloudforms	4.6
Redhat	Openstack	13
Redhat	Virtualization	4.0
Debian	Debian Linux	9.0
Redhat	Openstack	10
Redhat	Openstack	12
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	19.04

References

https://access.redhat.com/errata/RHBA-2018:3788Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:1948Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:1949Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2022Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2079Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2184Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2585Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:0054Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10855Issue Tracking, Vendor Advisory
https://usn.ubuntu.com/4072-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4396Third Party Advisory
https://access.redhat.com/errata/RHBA-2018:3788Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:1948Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:1949Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2022Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2079Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2184Vendor Advisory
https://access.redhat.com/errata/RHSA-2018:2585Vendor Advisory
https://access.redhat.com/errata/RHSA-2019:0054Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10855Issue Tracking, Vendor Advisory
https://usn.ubuntu.com/4072-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4396Third Party Advisory

Timeline

Published: Jul 3, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-10855?

How severe is CVE-2018-10855?

CVE-2018-10855 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 3.09% probability of exploitation in the next 30 days.

How do I fix CVE-2018-10855?

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-2018-10855?

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

Scan your code now

Source: NVD / NIST