MediumFix available
debusine — security advisory
Debusine is an integrated solution to build, distribute and maintain a Debian-based distribution. Debian source packages (.dsc) and upload artifacts (.changes) are manifest files that name the files that make up the artifact. The parser used to read these files in Debusine accepted arbitrary fully user-controlled paths. The mergeuploads task could be abused to create arbitrary symbolic links on a worker, overwriting any file that the worker user has access to.
- Products
- debusine
- Affected versions
- 0.11.3, 0.12.0, 0.12.1, 0.12.1~bpo13+2, 0.12.2, 0.13.0, 0.13.1, 0.13.1~bpo12+1, 0.13.1~bpo13+1, 0.14.0, 0.14.0~bpo13+1, 0.14.1, 0.14.1~bpo13+1, 0.14.2, 0.14.2~bpo13+1, 0.14.3, 0.14.3~bpo13+1, 0.14.4, 0.14.5, 0.14.5~bpo13+1, 0.14.6, 0.14.7, 0.14.7~bpo13+1, 0.14.8, 0.14.8~bpo13+1, 0.14.9~bpo13+1
- Fixed versions
- 0.11.3+deb13u1, 0.14.9
- CVEs
- CVE-2026-11853
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:36 UTC · Revision 2
Source evidence
Debusine is an integrated solution to build, distribute and maintain a Debian-based distribution. Debian source packages (.dsc) and upload artifacts (.changes) are manifest files that name the files that make up the artifact. The parser used to read these files in Debusine accepted arbitrary fully user-controlled paths. The mergeuploads task could be abused to create arbitrary symbolic links on a worker, overwriting any file that the worker user has access to.
osv:DEBIAN-CVE-2026-11853
debusine
Fixed versions: 0.11.3+deb13u1
debusine
Fixed versions: 0.14.9
Complete source record
{
"id": "54e8a3efbd3309f7218dc6b57714fae38a8663e571d4bed9b233e3f3cdf2229d",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-11853",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-11853",
"summary": "Debusine is an integrated solution to build, distribute and maintain a Debian-based distribution. Debian source packages (.dsc) and upload artifacts (.changes) are manifest files that name the files that make up the artifact. The parser used to read these files in Debusine accepted arbitrary fully user-controlled paths. The mergeuploads task could be abused to create arbitrary symbolic links on a worker, overwriting any file that the worker user has access to.",
"evidence": "osv:DEBIAN-CVE-2026-11853",
"products": [
{
"name": {
"value": "debusine",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.11.3+deb13u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "0.11.3",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "debusine",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "0.14.9",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "0.11.3",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.0",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.1~bpo13+2",
"evidence": "/affected/1/versions"
},
{
"value": "0.12.2",
"evidence": "/affected/1/versions"
},
{
"value": "0.13.0",
"evidence": "/affected/1/versions"
},
{
"value": "0.13.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.13.1~bpo12+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.13.1~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.0",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.0~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.1~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.2",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.2~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.3",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.3~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.4",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.5",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.5~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.6",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.7",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.7~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.8",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.8~bpo13+1",
"evidence": "/affected/1/versions"
},
{
"value": "0.14.9~bpo13+1",
"evidence": "/affected/1/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-11853",
"aliases": [
"DEBIAN-CVE-2026-11853"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.11.3+deb13u1"
}
]
}
],
"package": {
"name": "debusine",
"purl": "pkg:deb/debian/debusine?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.11.3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11853.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "0.14.9"
}
]
}
],
"package": {
"name": "debusine",
"purl": "pkg:deb/debian/debusine?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.11.3",
"0.12.0",
"0.12.1",
"0.12.1~bpo13+2",
"0.12.2",
"0.13.0",
"0.13.1",
"0.13.1~bpo12+1",
"0.13.1~bpo13+1",
"0.14.0",
"0.14.0~bpo13+1",
"0.14.1",
"0.14.1~bpo13+1",
"0.14.2",
"0.14.2~bpo13+1",
"0.14.3",
"0.14.3~bpo13+1",
"0.14.4",
"0.14.5",
"0.14.5~bpo13+1",
"0.14.6",
"0.14.7",
"0.14.7~bpo13+1",
"0.14.8",
"0.14.8~bpo13+1",
"0.14.9~bpo13+1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-11853.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T09:47:32.678319790Z",
"provider": "osv",
"upstream": [
"CVE-2026-11853"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-11853"
]
},
"related_cves": [
{
"value": "CVE-2026-11853",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 460868,
"published_at": "2026-06-10T10:16:31.467+00:00"
}