ubuntu-cve-2026-41082
Vulnerability from osv_ubuntu
Published
2026-04-17 00:00
Modified
2026-07-09 15:18
Summary
Details
In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.
Severity
7.3 (High)
7.1 (High)
7.8 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "opam",
"binary_version": "1.2.2-4"
},
{
"binary_name": "opam-docs",
"binary_version": "1.2.2-4"
}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "opam",
"purl": "pkg:deb/ubuntu/opam@1.2.2-4?arch=source\u0026distro=xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.2.2-3",
"1.2.2-3build1",
"1.2.2-4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "opam",
"binary_version": "1.2.2-6"
},
{
"binary_name": "opam-docs",
"binary_version": "1.2.2-6"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "opam",
"purl": "pkg:deb/ubuntu/opam@1.2.2-6?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.2.2-6"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "opam",
"binary_version": "2.0.5-1ubuntu1+esm1"
},
{
"binary_name": "opam-installer",
"binary_version": "2.0.5-1ubuntu1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "opam",
"purl": "pkg:deb/ubuntu/opam@2.0.5-1ubuntu1+esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.5-1ubuntu1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.5-1",
"2.0.5-1ubuntu1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "opam",
"binary_version": "2.1.2-1+deb12u1build0.22.04.1"
},
{
"binary_name": "opam-installer",
"binary_version": "2.1.2-1+deb12u1build0.22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "opam",
"purl": "pkg:deb/ubuntu/opam@2.1.2-1+deb12u1build0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.2-1+deb12u1build0.22.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.8-1",
"2.0.10-1",
"2.1.2-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "opam",
"binary_version": "2.1.5-1ubuntu0.1~esm2"
},
{
"binary_name": "opam-installer",
"binary_version": "2.1.5-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "opam",
"purl": "pkg:deb/ubuntu/opam@2.1.5-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.1.5-1ubuntu0.1~esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.1.5-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "opam",
"binary_version": "2.3.0-1+deb13u1build0.25.10.1"
},
{
"binary_name": "opam-installer",
"binary_version": "2.3.0-1+deb13u1build0.25.10.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "opam",
"purl": "pkg:deb/ubuntu/opam@2.3.0-1+deb13u1build0.25.10.1?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.0-1+deb13u1build0.25.10.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.3.0-1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "opam",
"binary_version": "2.5.0-1ubuntu0.1~esm1"
},
{
"binary_name": "opam-installer",
"binary_version": "2.5.0-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:26.04:LTS",
"name": "opam",
"purl": "pkg:deb/ubuntu/opam@2.5.0-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.0-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.3.0-1",
"2.4.1-1",
"2.5.0-1"
]
}
],
"aliases": [],
"details": "In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory.",
"id": "UBUNTU-CVE-2026-41082",
"modified": "2026-07-09T15:18:07Z",
"published": "2026-04-17T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-41082"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-41082"
},
{
"type": "REPORT",
"url": "https://github.com/ocaml/security-advisories/blob/main/advisories/2026/OSEC-2026-03.md"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8256-1"
}
],
"related": [
"USN-8256-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-41082"
]
}
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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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