Home/CVE/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
CVE

CVE-2018-10855

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

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.

MEDIUM · CVSS 5.9 EPSS 0.02987
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-532Insertion of Sensitive Information into Log File
CWE-532Insertion of Sensitive Information into Log File
▤

Affected Products & Versions

8
redhat ansible engine>= 2.4 and < 2.4.5
redhat ansible engine> 2.5 and <= 2.5.5
redhat ansible engineall versions
redhat cloudformsall versions
redhat openstackall versions
redhat virtualizationall versions
debian linuxall versions
canonical ubuntu linuxall versions
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
PyPI ansible HIGH fixed in 2.5.5
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumPowershell Detect Virtualization Environment
▣

Scoring & Timeline

5.9
MEDIUM · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Jul 2018 · 01:29 AM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

17
suse-csafopenSUSE-SU-2025:15753-1
suse-csafopenSUSE-SU-2025:15605-1
suse-csafopenSUSE-SU-2024:14536-1
suse-csafopenSUSE-SU-2024:14244-1
suse-csafopenSUSE-SU-2024:10615-1
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10855Issue TrackingVendor Advisory
https://usn.ubuntu.com/4072-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4396Third Party Advisory
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