MediumFix available
libgcrypt20 — security advisory
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
- Products
- libgcrypt20
- Affected versions
- 1.10.1-3, 1.11.0+git20250114-1, 1.11.0-7, 1.11.1-1, 1.11.2-1, 1.11.2-2, 1.11.2-3, 1.12.0-1, 1.12.0-2, 1.12.1-1, 1.12.1-2
- Fixed versions
- 1.10.1-3+deb12u1, 1.11.0-7+deb13u1, 1.12.2-1
- CVEs
- CVE-2026-41989
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:49 UTC · Revision 1
Source evidence
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
osv:DEBIAN-CVE-2026-41989
libgcrypt20
Fixed versions: 1.10.1-3+deb12u1
libgcrypt20
Fixed versions: 1.11.0-7+deb13u1
libgcrypt20
Fixed versions: 1.12.2-1
Complete source record
{
"id": "0f424a97b6a302f1227ba8c94746c794df1b580b55db65a3c6c78702edc131f8",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-41989",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-41989",
"summary": "Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.",
"evidence": "osv:DEBIAN-CVE-2026-41989",
"products": [
{
"name": {
"value": "libgcrypt20",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.10.1-3+deb12u1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "1.10.1-3",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "libgcrypt20",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.11.0-7+deb13u1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "1.11.0-7",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "libgcrypt20",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.12.2-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.11.0+git20250114-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.11.0-7",
"evidence": "/affected/2/versions"
},
{
"value": "1.11.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.11.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.11.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.11.2-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.12.1-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-41989",
"aliases": [
"DEBIAN-CVE-2026-41989"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.10.1-3+deb12u1"
}
]
}
],
"package": {
"name": "libgcrypt20",
"purl": "pkg:deb/debian/libgcrypt20?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.10.1-3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41989.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.11.0-7+deb13u1"
}
]
}
],
"package": {
"name": "libgcrypt20",
"purl": "pkg:deb/debian/libgcrypt20?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.11.0-7"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41989.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.12.2-1"
}
]
}
],
"package": {
"name": "libgcrypt20",
"purl": "pkg:deb/debian/libgcrypt20?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.11.0+git20250114-1",
"1.11.0-7",
"1.11.1-1",
"1.11.2-1",
"1.11.2-2",
"1.11.2-3",
"1.12.0-1",
"1.12.0-2",
"1.12.1-1",
"1.12.1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41989.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-27T09:47:39.895923411Z",
"provider": "osv",
"upstream": [
"CVE-2026-41989"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-41989"
]
},
"related_cves": [
{
"value": "CVE-2026-41989",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 461288,
"published_at": "2026-04-23T05:16:05.75+00:00"
}