usn-8518-1
Vulnerability from osv_ubuntu
Published
2026-07-08 17:15
Modified
2026-07-09 19:08
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
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-10037",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "mailcap",
"binary_version": "3.70+nmu1ubuntu1.22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "mailcap",
"purl": "pkg:deb/ubuntu/mailcap@3.70+nmu1ubuntu1.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.70+nmu1ubuntu1.22.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.69ubuntu1",
"3.70ubuntu1",
"3.70+nmu1ubuntu1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-10037",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "mailcap",
"binary_version": "3.70+nmu1ubuntu1.24.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "mailcap",
"purl": "pkg:deb/ubuntu/mailcap@3.70+nmu1ubuntu1.24.04.1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.70+nmu1ubuntu1.24.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.70+nmu1ubuntu1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-10037",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:25.10"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "mailcap",
"binary_version": "3.74ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "mailcap",
"purl": "pkg:deb/ubuntu/mailcap@3.74ubuntu1.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.74ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.74ubuntu1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2026-10037",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:26.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "mailcap",
"binary_version": "3.75ubuntu1.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "mailcap",
"purl": "pkg:deb/ubuntu/mailcap@3.75ubuntu1.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.75ubuntu1.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.74ubuntu1",
"3.75ubuntu1"
]
}
],
"aliases": [],
"details": "Aaron Rainbolt discovered that the cautious-launcher utility in the\nmailcap package did not properly restrict the execution of certain\nfile types. An attacker could use this issue to escape a sandboxed\napplication and execute arbitrary code on the host operating system.",
"id": "USN-8518-1",
"modified": "2026-07-09T19:08:18Z",
"published": "2026-07-08T17:15:41Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8518-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-10037"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "mailcap vulnerability",
"upstream": [
"UBUNTU-CVE-2026-10037"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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