MediumFix available
jq — security advisory
jq is a command-line JSON processor. In 1.8.1 and earlier, jv_contains recurses into nested arrays/objects with no depth limit. With a sufficiently nested input structure (built programmatically with reduce, since the JSON parser caps at depth 10000), the C stack is exhausted.
- Products
- jq
- Affected versions
- 1.6-2.1, 1.6-2.1+deb12u1, 1.6-2.1+deb12u2, 1.6-2.1+deb12u3, 1.6-3, 1.7-1, 1.7.1-1, 1.7.1-2, 1.7.1-3, 1.7.1-4, 1.7.1-5, 1.7.1-6, 1.7.1-6+deb13u1, 1.7.1-6+deb13u2, 1.8.0-1, 1.8.1-1, 1.8.1-2, 1.8.1-3, 1.8.1-4, 1.8.1-5, 1.8.1-6, 1.8.1-7, 1.8.1-8, 1.8.2-1
- Fixed versions
- 1.7.1-6+deb13u3, 1.8.1-6
- CVEs
- CVE-2026-40612
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 17:50 UTC · Revision 2
Source evidence
jq is a command-line JSON processor. In 1.8.1 and earlier, jv_contains recurses into nested arrays/objects with no depth limit. With a sufficiently nested input structure (built programmatically with reduce, since the JSON parser caps at depth 10000), the C stack is exhausted.
osv:DEBIAN-CVE-2026-40612
jq
Fixed versions: Not specified
jq
Fixed versions: 1.7.1-6+deb13u3
jq
Fixed versions: 1.8.1-6
Complete source record
{
"id": "c392b5d1dc7fe9d55fd39c89a1a9985ea9dc882cd8820c424c6383cc9c9bb225",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-40612",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-40612",
"summary": "jq is a command-line JSON processor. In 1.8.1 and earlier, jv_contains recurses into nested arrays/objects with no depth limit. With a sufficiently nested input structure (built programmatically with reduce, since the JSON parser caps at depth 10000), the C stack is exhausted.",
"evidence": "osv:DEBIAN-CVE-2026-40612",
"products": [
{
"name": {
"value": "jq",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.6-2.1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6-2.1+deb12u1",
"evidence": "/affected/0/versions"
},
{
"value": "1.6-2.1+deb12u2",
"evidence": "/affected/0/versions"
},
{
"value": "1.6-2.1+deb12u3",
"evidence": "/affected/0/versions"
},
{
"value": "1.6-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.1-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.1-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.1-4",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.1-5",
"evidence": "/affected/0/versions"
},
{
"value": "1.7.1-6",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-4",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-5",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-6",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-7",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.1-8",
"evidence": "/affected/0/versions"
},
{
"value": "1.8.2-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "jq",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.7.1-6+deb13u3",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "1.7.1-6+deb13u1",
"evidence": "/affected/1/versions"
},
{
"value": "1.7.1-6+deb13u2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "jq",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.8.1-6",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "1.8.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.8.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.8.1-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.8.1-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.8.1-4",
"evidence": "/affected/2/versions"
},
{
"value": "1.8.1-5",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2026-40612",
"aliases": [
"DEBIAN-CVE-2026-40612"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "jq",
"purl": "pkg:deb/debian/jq?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"1.6-2.1",
"1.6-2.1+deb12u1",
"1.6-2.1+deb12u2",
"1.6-2.1+deb12u3",
"1.6-3",
"1.7-1",
"1.7.1-1",
"1.7.1-2",
"1.7.1-3",
"1.7.1-4",
"1.7.1-5",
"1.7.1-6",
"1.8.0-1",
"1.8.1-1",
"1.8.1-2",
"1.8.1-3",
"1.8.1-4",
"1.8.1-5",
"1.8.1-6",
"1.8.1-7",
"1.8.1-8",
"1.8.2-1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40612.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.7.1-6+deb13u3"
}
]
}
],
"package": {
"name": "jq",
"purl": "pkg:deb/debian/jq?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"1.7.1-6+deb13u1",
"1.7.1-6+deb13u2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40612.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.8.1-6"
}
]
}
],
"package": {
"name": "jq",
"purl": "pkg:deb/debian/jq?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"1.8.0-1",
"1.8.1-1",
"1.8.1-2",
"1.8.1-3",
"1.8.1-4",
"1.8.1-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-40612.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
],
"modified": "2026-10-27T10:01:02.733598082Z",
"provider": "osv",
"upstream": [
"CVE-2026-40612"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-40612"
]
},
"related_cves": [
{
"value": "CVE-2026-40612",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 461345,
"published_at": "2026-05-11T18:16:33.67+00:00"
}