MediumFix available
CVE-2026-56408 in expat - Patched by Root
Type: advisorySources: OSV
Root has patched CVE-2026-56408 in the expat package for Root:Debian:11. Multiple fixed versions available.
- Products
- expat, rootio-expat
- Affected versions
- Not specified
- Fixed versions
- 2.2.10-2+deb11u7.aikido.17, 2.2.10-2+deb11u7.aikido.18, 2.2.10-2+deb11u7.aikido.19, 2.2.10-2+deb11u7.aikido.20, 2.2.10-2+deb11u7.root.io.14, 2.2.10-2+deb11u7.root.io.15, 2.2.10-2+deb11u7.root.io.16
- CVEs
- CVE-2026-56408
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 08:06 UTC · Revision 1
Source evidence
Root has patched CVE-2026-56408 in the expat package for Root:Debian:11. Multiple fixed versions available.
osv:ROOT-OS-DEBIAN-11-CVE-2026-56408
expat
Fixed versions: 2.2.10-2+deb11u7.root.io.14, 2.2.10-2+deb11u7.aikido.17, 2.2.10-2+deb11u7.root.io.15, 2.2.10-2+deb11u7.aikido.19, 2.2.10-2+deb11u7.aikido.18, 2.2.10-2+deb11u7.aikido.20, 2.2.10-2+deb11u7.root.io.16
rootio-expat
Fixed versions: 2.2.10-2+deb11u7.root.io.14, 2.2.10-2+deb11u7.aikido.17, 2.2.10-2+deb11u7.root.io.15, 2.2.10-2+deb11u7.aikido.19, 2.2.10-2+deb11u7.aikido.18, 2.2.10-2+deb11u7.aikido.20, 2.2.10-2+deb11u7.root.io.16
Complete source record
{
"id": "22c12e2026ff6ae43968eb5f7cdf2ba950619fd086f285068ecc9d739eca1b65",
"url": "https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2026-56408",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2026-56408 in expat - Patched by Root",
"summary": "Root has patched CVE-2026-56408 in the expat package for Root:Debian:11. Multiple fixed versions available.",
"evidence": "osv:ROOT-OS-DEBIAN-11-CVE-2026-56408",
"products": [
{
"name": {
"value": "expat",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.10-2+deb11u7.root.io.14",
"evidence": "/affected/0/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.17",
"evidence": "/affected/0/ranges"
},
{
"value": "2.2.10-2+deb11u7.root.io.15",
"evidence": "/affected/0/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.19",
"evidence": "/affected/0/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.18",
"evidence": "/affected/0/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.20",
"evidence": "/affected/0/ranges"
},
{
"value": "2.2.10-2+deb11u7.root.io.16",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "rootio-expat",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.10-2+deb11u7.root.io.14",
"evidence": "/affected/1/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.17",
"evidence": "/affected/1/ranges"
},
{
"value": "2.2.10-2+deb11u7.root.io.15",
"evidence": "/affected/1/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.19",
"evidence": "/affected/1/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.18",
"evidence": "/affected/1/ranges"
},
{
"value": "2.2.10-2+deb11u7.aikido.20",
"evidence": "/affected/1/ranges"
},
{
"value": "2.2.10-2+deb11u7.root.io.16",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "ROOT-OS-DEBIAN-11-CVE-2026-56408",
"aliases": [
"ROOT-OS-DEBIAN-11-CVE-2026-56408"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.10-2+deb11u7.root.io.14"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.17"
},
{
"fixed": "2.2.10-2+deb11u7.root.io.15"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.19"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.18"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.20"
},
{
"fixed": "2.2.10-2+deb11u7.root.io.16"
}
]
}
],
"package": {
"name": "expat",
"ecosystem": "Root:Debian:11"
},
"database_specific": {
"source": "https://api.root.io/external/osv/ROOT-OS-DEBIAN-11-CVE-2026-56408.json",
"root_patched": true,
"upstream_version": "2.2.10-2+deb11u7",
"all_fixed_versions": [
"2.2.10-2+deb11u7.root.io.14",
"2.2.10-2+deb11u7.aikido.17",
"2.2.10-2+deb11u7.root.io.15",
"2.2.10-2+deb11u7.aikido.19",
"2.2.10-2+deb11u7.aikido.18",
"2.2.10-2+deb11u7.aikido.20",
"2.2.10-2+deb11u7.root.io.16"
],
"root_patch_version": "aikido.20",
"total_fixed_versions": 7
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.10-2+deb11u7.root.io.14"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.17"
},
{
"fixed": "2.2.10-2+deb11u7.root.io.15"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.19"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.18"
},
{
"fixed": "2.2.10-2+deb11u7.aikido.20"
},
{
"fixed": "2.2.10-2+deb11u7.root.io.16"
}
]
}
],
"package": {
"name": "rootio-expat",
"ecosystem": "Root:Debian:11"
},
"database_specific": {
"source": "https://api.root.io/external/osv/ROOT-OS-DEBIAN-11-CVE-2026-56408.json",
"root_patched": true,
"upstream_version": "2.2.10-2+deb11u7",
"all_fixed_versions": [
"2.2.10-2+deb11u7.root.io.14",
"2.2.10-2+deb11u7.aikido.17",
"2.2.10-2+deb11u7.root.io.15",
"2.2.10-2+deb11u7.aikido.19",
"2.2.10-2+deb11u7.aikido.18",
"2.2.10-2+deb11u7.aikido.20",
"2.2.10-2+deb11u7.root.io.16"
],
"root_patch_version": "aikido.20",
"total_fixed_versions": 7
}
}
],
"modified": "2026-10-19T11:15:03.241966715Z",
"provider": "osv",
"upstream": [
"CVE-2026-56408"
],
"references": [],
"provider_metadata": {
"distro": "debian",
"source": "Root",
"severity": "MEDIUM",
"distro_version": "11"
}
},
"related_cves": [
{
"value": "CVE-2026-56408",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/database_specific/severity"
},
"source_id": "core-osv",
"document_id": 374662,
"published_at": "2026-10-19T10:19:12+00:00"
}