UBUNTU-CVE-2026-11853

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Source
https://ubuntu.com/security/CVE-2026-11853
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11853.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-11853
Upstream
  • CVE-2026-11853
Published
2026-06-10T10:16:00Z
Modified
2026-06-24T11:01:16.167263783Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:24.04:LTS / debusine

Package

Name
debusine
Purl
pkg:deb/ubuntu/debusine?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.2.0
0.2.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "debusine-client",
            "binary_version": "0.2.1"
        },
        {
            "binary_name": "debusine-server",
            "binary_version": "0.2.1"
        },
        {
            "binary_name": "debusine-worker",
            "binary_version": "0.2.1"
        },
        {
            "binary_name": "python3-debusine",
            "binary_version": "0.2.1"
        },
        {
            "binary_name": "python3-debusine-server",
            "binary_version": "0.2.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11853.json"

Ubuntu:25.10 / debusine

Package

Name
debusine
Purl
pkg:deb/ubuntu/debusine?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.9.0
0.11.0
0.11.1
0.11.2
0.11.3
0.12.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "debusine-client",
            "binary_version": "0.12.1"
        },
        {
            "binary_name": "debusine-server",
            "binary_version": "0.12.1"
        },
        {
            "binary_name": "debusine-signing",
            "binary_version": "0.12.1"
        },
        {
            "binary_name": "debusine-worker",
            "binary_version": "0.12.1"
        },
        {
            "binary_name": "python3-debusine",
            "binary_version": "0.12.1"
        },
        {
            "binary_name": "python3-debusine-server",
            "binary_version": "0.12.1"
        },
        {
            "binary_name": "python3-debusine-signing",
            "binary_version": "0.12.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11853.json"

Ubuntu:26.04:LTS / debusine

Package

Name
debusine
Purl
pkg:deb/ubuntu/debusine?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.12.1
0.12.2
0.13.0
0.13.1
0.14.0
0.14.1
0.14.2
0.14.3
0.14.4
0.14.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "debusine-client",
            "binary_version": "0.14.5"
        },
        {
            "binary_name": "debusine-server",
            "binary_version": "0.14.5"
        },
        {
            "binary_name": "debusine-signing",
            "binary_version": "0.14.5"
        },
        {
            "binary_name": "debusine-worker",
            "binary_version": "0.14.5"
        },
        {
            "binary_name": "python3-debusine",
            "binary_version": "0.14.5"
        },
        {
            "binary_name": "python3-debusine-server",
            "binary_version": "0.14.5"
        },
        {
            "binary_name": "python3-debusine-signing",
            "binary_version": "0.14.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-11853.json"