ansible — 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
- ansible
- Affected versions
- Not specified
- Fixed versions
- 2.5.5+dfsg-1
- CVEs
- CVE-2018-10855
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 01:28 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:DEBIAN-CVE-2018-10855
ansible
Fixed versions: 2.5.5+dfsg-1
ansible
Fixed versions: 2.5.5+dfsg-1
ansible
Fixed versions: 2.5.5+dfsg-1
Complete source record
{
"id": "404b8f8c8fffe4e1c0a7b968aeda81aa78e882294665a6b3720540f071533121",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-10855",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-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:DEBIAN-CVE-2018-10855",
"products": [
{
"name": {
"value": "ansible",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.5.5+dfsg-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ansible",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.5.5+dfsg-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "ansible",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.5.5+dfsg-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2018-10855",
"aliases": [
"DEBIAN-CVE-2018-10855"
],
"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": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.5+dfsg-1"
}
]
}
],
"package": {
"name": "ansible",
"purl": "pkg:deb/debian/ansible?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-10855.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.5+dfsg-1"
}
]
}
],
"package": {
"name": "ansible",
"purl": "pkg:deb/debian/ansible?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-10855.json"
},
"ecosystem_specific": {
"urgency": "low"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.5+dfsg-1"
}
]
}
],
"package": {
"name": "ansible",
"purl": "pkg:deb/debian/ansible?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-10855.json"
},
"ecosystem_specific": {
"urgency": "low"
}
}
],
"modified": "2026-10-23T18:04:46.507195679Z",
"provider": "osv",
"upstream": [
"CVE-2018-10855"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2018-10855"
]
},
"related_cves": [
{
"value": "CVE-2018-10855",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 423679,
"published_at": "2018-07-03T01:29:00.58+00:00"
}