HighFix available
dulwich — security advisory
Dulwich before 1.2.9 contains a denial of service vulnerability in Pack.resolve_object that allows attackers to cause infinite recursion via self-referential OFS_DELTA objects. Attackers can supply a malicious packfile with an OFS_DELTA delta_offset of 0 to exhaust CPU during clone, fetch, or cat-file operations.
- Products
- dulwich
- Affected versions
- 0.21.2-1, 0.21.5-1, 0.21.6-1, 0.22.5-1, 0.22.7-1, 0.22.7-2, 0.24.10-1, 0.24.2-1, 0.24.2-2, 1.0.0-1, 1.0.0-2, 1.1.0-1, 1.1.0-2, 1.1.0-3, 1.2.0-1, 1.2.1-1, 1.2.11-1, 1.2.12-1, 1.2.17-1, 1.2.5-1, 1.2.7-1, 1.2.7-2
- Fixed versions
- 1.2.11-1
- CVEs
- CVE-2026-114095
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 02:05 UTC · Revision 1
Source evidence
Dulwich before 1.2.9 contains a denial of service vulnerability in Pack.resolve_object that allows attackers to cause infinite recursion via self-referential OFS_DELTA objects. Attackers can supply a malicious packfile with an OFS_DELTA delta_offset of 0 to exhaust CPU during clone, fetch, or cat-file operations.
osv:DEBIAN-CVE-2026-114095
dulwich
Fixed versions: Not specified
dulwich
Fixed versions: Not specified
dulwich
Fixed versions: 1.2.11-1
Complete source record
{
"id": "9f7e4ebbe6ba1b2449ee74621d81d8eca29136730179842e1ebecd7337dd34e1",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-114095",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2026-114095",
"summary": "Dulwich before 1.2.9 contains a denial of service vulnerability in Pack.resolve_object that allows attackers to cause infinite recursion via self-referential OFS_DELTA objects. Attackers can supply a malicious packfile with an OFS_DELTA delta_offset of 0 to exhaust CPU during clone, fetch, or cat-file operations.",
"evidence": "osv:DEBIAN-CVE-2026-114095",
"products": [
{
"name": {
"value": "dulwich",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.21.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.21.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.21.6-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.22.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.22.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.22.7-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.24.10-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.24.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.24.2-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.0.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.0.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.0-2",
"evidence": "/affected/0/versions"
},
{
"value": "1.1.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.1-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.11-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.12-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.17-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.5-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.7-1",
"evidence": "/affected/0/versions"
},
{
"value": "1.2.7-2",
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}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.22.7-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.22.7-2",
"evidence": "/affected/1/versions"
},
{
"value": "0.24.10-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.24.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.24.2-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.0.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.0.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.1.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.1.0-2",
"evidence": "/affected/1/versions"
},
{
"value": "1.1.0-3",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.11-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.12-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.17-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.5-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.7-1",
"evidence": "/affected/1/versions"
},
{
"value": "1.2.7-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "dulwich",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.2.11-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "0.22.7-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.22.7-2",
"evidence": "/affected/2/versions"
},
{
"value": "0.24.10-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.24.2-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.24.2-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.0.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.0.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.1.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.1.0-2",
"evidence": "/affected/2/versions"
},
{
"value": "1.1.0-3",
"evidence": "/affected/2/versions"
},
{
"value": "1.2.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.2.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.2.5-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.2.7-1",
"evidence": "/affected/2/versions"
},
{
"value": "1.2.7-2",
"evidence": "/affected/2/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2026-114095",
"aliases": [
"DEBIAN-CVE-2026-114095"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dulwich",
"purl": "pkg:deb/debian/dulwich?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"0.21.2-1",
"0.21.5-1",
"0.21.6-1",
"0.22.5-1",
"0.22.7-1",
"0.22.7-2",
"0.24.10-1",
"0.24.2-1",
"0.24.2-2",
"1.0.0-1",
"1.0.0-2",
"1.1.0-1",
"1.1.0-2",
"1.1.0-3",
"1.2.0-1",
"1.2.1-1",
"1.2.11-1",
"1.2.12-1",
"1.2.17-1",
"1.2.5-1",
"1.2.7-1",
"1.2.7-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-114095.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "dulwich",
"purl": "pkg:deb/debian/dulwich?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"0.22.7-1",
"0.22.7-2",
"0.24.10-1",
"0.24.2-1",
"0.24.2-2",
"1.0.0-1",
"1.0.0-2",
"1.1.0-1",
"1.1.0-2",
"1.1.0-3",
"1.2.0-1",
"1.2.1-1",
"1.2.11-1",
"1.2.12-1",
"1.2.17-1",
"1.2.5-1",
"1.2.7-1",
"1.2.7-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-114095.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.2.11-1"
}
]
}
],
"package": {
"name": "dulwich",
"purl": "pkg:deb/debian/dulwich?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"0.22.7-1",
"0.22.7-2",
"0.24.10-1",
"0.24.2-1",
"0.24.2-2",
"1.0.0-1",
"1.0.0-2",
"1.1.0-1",
"1.1.0-2",
"1.1.0-3",
"1.2.0-1",
"1.2.1-1",
"1.2.5-1",
"1.2.7-1",
"1.2.7-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-114095.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:05:35.097425882Z",
"provider": "osv",
"upstream": [
"CVE-2026-114095"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2026-114095"
]
},
"related_cves": [
{
"value": "CVE-2026-114095",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 424511,
"published_at": "2026-10-21T01:17:34.763+00:00"
}