Medium
ocaml-mirage-crypto — security advisory
An issue was discovered in the mirage-crypto-ec package before 2.3.0 for OCaml. There is an EC public key out-of-bounds read for compressed points.
- Products
- ocaml-mirage-crypto
- Affected versions
- 0.10.5-4, 0.10.5-4build2, 0.11.1-3, 0.11.2-1, 0.11.2-1build1, 0.11.2-2build3, 2.0.1-1build1, 2.0.2-1build1, 2.0.2-1build2, 2.0.2-1build3, 2.0.2-1build5, 2.4.0-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-87736
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:24 UTC · Revision 1
Source evidence
An issue was discovered in the mirage-crypto-ec package before 2.3.0 for OCaml. There is an EC public key out-of-bounds read for compressed points.
osv:UBUNTU-CVE-2026-87736
ocaml-mirage-crypto
Fixed versions: Not specified
ocaml-mirage-crypto
Fixed versions: Not specified
ocaml-mirage-crypto
Fixed versions: Not specified
ocaml-mirage-crypto
Fixed versions: Not specified
Complete source record
{
"id": "0b9c3c6d003e2766d723f82582f59ed12c7b4970cdfc5d94a06b532bf6ffc9cd",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-87736",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-87736",
"summary": "An issue was discovered in the mirage-crypto-ec package before 2.3.0 for OCaml. There is an EC public key out-of-bounds read for compressed points.",
"evidence": "osv:UBUNTU-CVE-2026-87736",
"products": [
{
"name": {
"value": "ocaml-mirage-crypto",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.10.5-4",
"evidence": "/affected/0/versions"
},
{
"value": "0.10.5-4build2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "ocaml-mirage-crypto",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.11.1-3",
"evidence": "/affected/1/versions"
},
{
"value": "0.11.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.11.2-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "0.11.2-2build3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "ocaml-mirage-crypto",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.2-1build5",
"evidence": "/affected/2/versions"
},
{
"value": "2.4.0-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "ocaml-mirage-crypto",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.1-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "2.0.2-1build1",
"evidence": "/affected/3/versions"
},
{
"value": "2.0.2-1build2",
"evidence": "/affected/3/versions"
},
{
"value": "2.0.2-1build3",
"evidence": "/affected/3/versions"
},
{
"value": "2.0.2-1build5",
"evidence": "/affected/3/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2026-87736",
"aliases": [
"UBUNTU-CVE-2026-87736"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ocaml-mirage-crypto",
"purl": "pkg:deb/ubuntu/ocaml-mirage-crypto?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.10.5-4",
"0.10.5-4build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87736.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmirage-crypto-ocaml",
"binary_version": "0.10.5-4build2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ocaml-mirage-crypto",
"purl": "pkg:deb/ubuntu/ocaml-mirage-crypto?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.11.1-3",
"0.11.2-1",
"0.11.2-1build1",
"0.11.2-2build3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87736.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmirage-crypto-ocaml",
"binary_version": "0.11.2-2build3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ocaml-mirage-crypto",
"purl": "pkg:deb/ubuntu/ocaml-mirage-crypto?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"2.0.2-1build5",
"2.4.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87736.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmirage-crypto-ocaml",
"binary_version": "2.4.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "ocaml-mirage-crypto",
"purl": "pkg:deb/ubuntu/ocaml-mirage-crypto?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"2.0.1-1build1",
"2.0.2-1build1",
"2.0.2-1build2",
"2.0.2-1build3",
"2.0.2-1build5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-87736.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libmirage-crypto-ocaml",
"binary_version": "2.0.2-1build5"
}
]
}
}
],
"modified": "2026-10-17T13:01:14.830656095Z",
"provider": "osv",
"upstream": [
"CVE-2026-87736"
],
"references": [
"https://ubuntu.com/security/CVE-2026-87736",
"https://www.cve.org/CVERecord?id=CVE-2026-87736",
"https://osv.dev/vulnerability/OSEC-2026-15"
]
},
"related_cves": [
{
"value": "CVE-2026-87736",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361353,
"published_at": "2026-09-09T05:18:00+00:00"
}