USN-8518-1

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Source
https://ubuntu.com/security/notices/USN-8518-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8518-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-8518-1
Upstream
Related
Published
2026-07-08T17:15:41Z
Modified
2026-07-09T21:30:41.445309092Z
Summary
mailcap vulnerability
Details

Aaron Rainbolt discovered that the cautious-launcher utility in the mailcap package did not properly restrict the execution of certain file types. An attacker could use this issue to escape a sandboxed application and execute arbitrary code on the host operating system.

References

Affected packages

Ubuntu:22.04:LTS / mailcap

Package

Name
mailcap
Purl
pkg:deb/ubuntu/mailcap?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.70+nmu1ubuntu1.22.04.1

Affected versions

3.*
3.69ubuntu1
3.70ubuntu1
3.70+nmu1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mailcap",
            "binary_version": "3.70+nmu1ubuntu1.22.04.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8518-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-10037",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:24.04:LTS / mailcap

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.70+nmu1ubuntu1.24.04.1

Affected versions

3.*
3.70+nmu1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mailcap",
            "binary_version": "3.70+nmu1ubuntu1.24.04.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8518-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:24.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-10037",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:25.10 / mailcap

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.74ubuntu1.1

Affected versions

3.*
3.74ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mailcap",
            "binary_version": "3.74ubuntu1.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8518-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:25.10",
    "cves": [
        {
            "id": "CVE-2026-10037",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:26.04:LTS / mailcap

Package

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

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.75ubuntu1.1

Affected versions

3.*
3.74ubuntu1
3.75ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "mailcap",
            "binary_version": "3.75ubuntu1.1"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8518-1.json"
cves_map 
{
    "ecosystem": "Ubuntu:26.04:LTS",
    "cves": [
        {
            "id": "CVE-2026-10037",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}