Medium
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-10855
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:09 UTC · Revision 1
Source evidence
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.
osv:CVE-2018-10855
Complete source record
{
"id": "1e7575625c243e386d2d70254524bde78402da4cb59a1e0ddd0674dbea2632f6",
"url": "https://osv.dev/vulnerability/CVE-2018-10855",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-10855",
"summary": "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.",
"evidence": "osv:CVE-2018-10855",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2018-10855",
"aliases": [
"CVE-2018-10855",
"GHSA-jwcc-j78w-j73w",
"PYSEC-2018-42"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/ansible/ansible",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "2a18883cb24b70043b5d719bb3c64c594670cad2"
},
{
"last_affected": "5f6e1a70a6f879146b8504244d1b43f2e2059856"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:redhat:ansible_engine:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.4"
},
{
"fixed": "2.4.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:redhat:ansible_engine:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.5.5"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.4.5.0-0.1.rc1",
"v2.5.5",
"v2.5.4",
"v2.5.3",
"v2.5.2",
"v2.5.1",
"v2.4.4.0-1",
"v2.4.4.0-0.3.rc2",
"v2.5.0",
"v2.5.0rc3",
"v2.5.0rc2",
"v2.4.4-0.2.rc1",
"v2.5.0rc1",
"v2.4.4-0.1.beta1",
"v2.5.0b2",
"v2.5.0b1",
"v2.4.3.0-1",
"v2.4.3.0-0.6.rc3",
"v2.4.3.0-0.5.rc2",
"v2.4.3.0-0.4.rc1",
"v2.4.3-0.3.beta3",
"v2.4.3.0-0.2.beta2",
"v2.4.3.0-0.1.beta1",
"v2.4.2.0-1",
"v2.4.2.0-0.5.rc1",
"v2.4.2.0-0.4.beta4",
"v2.4.2.0-0.3.beta3",
"v2.4.2.0-0.2.beta2",
"v2.4.2.0-0.1.beta1",
"v2.4.1.0-1",
"v2.4.1.0-0.4.rc2",
"v2.4.1.0-0.3.rc1",
"v2.4.1.0-0.2.beta2",
"v2.4.1.0-0.1.beta1",
"v2.4.0.0-1",
"v2.4.0.0-0.5.rc5",
"v2.4.0.0-0.4.rc4",
"v2.4.0.0-0.3.rc3",
"v2.4.0.0-0.2.rc2",
"v2.4.0.0-0.1.rc1",
"v2.0.0-0.5.beta3",
"v2.0.0-0.4.beta2",
"v2.0.0-0.3.beta1",
"v2.0.0-0.2.alpha2",
"v2.0.0-0.1.alpha1",
"v1.6.0",
"v1.4.0",
"v1.2",
"v1.1",
"v1.0",
"0.7",
"0.3",
"0.0.1",
"0.01"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-10855.json"
}
}
],
"modified": "2026-10-24T10:30:49.358512639Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHBA-2018:3788",
"https://access.redhat.com/errata/RHSA-2018:1948",
"https://access.redhat.com/errata/RHSA-2018:1949",
"https://access.redhat.com/errata/RHSA-2018:2022",
"https://access.redhat.com/errata/RHSA-2018:2079",
"https://access.redhat.com/errata/RHSA-2018:2184",
"https://access.redhat.com/errata/RHSA-2018:2585",
"https://access.redhat.com/errata/RHSA-2019:0054",
"https://usn.ubuntu.com/4072-1/",
"https://www.debian.org/security/2019/dsa-4396",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10855"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "19.04"
},
{
"last_affected": "19.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:ansible_engine:2.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:ansible_engine",
"extracted_events": [
{
"range": [
{
"introduced": "2.0"
},
{
"last_affected": "2.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:cloudforms:4.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:cloudforms",
"extracted_events": [
{
"range": [
{
"introduced": "4.6"
},
{
"last_affected": "4.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:openstack:12:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:openstack",
"extracted_events": [
{
"range": [
{
"introduced": "13"
},
{
"last_affected": "13"
},
{
"introduced": "10"
},
{
"last_affected": "10"
},
{
"introduced": "12"
},
{
"last_affected": "12"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:virtualization",
"extracted_events": [
{
"range": [
{
"introduced": "4.0"
},
{
"last_affected": "4.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-10855",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 436973,
"published_at": "2018-07-03T01:29:00.58+00:00"
}