Low
golang-github-go-git-go-git — security advisory
go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.
- Products
- golang-github-go-git-go-git
- Affected versions
- 5.14.0-1, 5.16.2-1, 5.16.2-1ubuntu0.1~esm1, 5.19.1-1, 5.19.2-1, 5.4.2-3, 5.4.2-3build1, 5.4.2-3ubuntu0.1~esm1, 5.4.2-3ubuntu0.1~esm2, 5.4.2-4, 5.4.2-4ubuntu0.24.04.1, 5.4.2-4ubuntu0.24.04.2, 5.4.2-4ubuntu0.24.04.2+esm1, 5.4.2-4ubuntu0.24.04.3, 5.4.2-4ubuntu0.24.04.3+esm1, 5.4.2-4ubuntu0.24.04.3+esm2, 5.4.2-4ubuntu0.24.04.3+esm3
- Fixed versions
- Not specified
- CVEs
- CVE-2026-33762
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:00 UTC · Revision 1
Source evidence
go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.
osv:UBUNTU-CVE-2026-33762
golang-github-go-git-go-git
Fixed versions: Not specified
golang-github-go-git-go-git
Fixed versions: Not specified
golang-github-go-git-go-git
Fixed versions: Not specified
golang-github-go-git-go-git
Fixed versions: Not specified
golang-github-go-git-go-git
Fixed versions: Not specified
Complete source record
{
"id": "ae88cc55f412ef6911a9efe4910878848314947dfd91c96e520a4d5dbbdc0c84",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-33762",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-33762",
"summary": "go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.",
"evidence": "osv:UBUNTU-CVE-2026-33762",
"products": [
{
"name": {
"value": "golang-github-go-git-go-git",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.4.2-3",
"evidence": "/affected/0/versions"
},
{
"value": "5.4.2-3ubuntu0.1~esm1",
"evidence": "/affected/0/versions"
},
{
"value": "5.4.2-3ubuntu0.1~esm2",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "golang-github-go-git-go-git",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.4.2-3build1",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4ubuntu0.24.04.1",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4ubuntu0.24.04.2",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4ubuntu0.24.04.2+esm1",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4ubuntu0.24.04.3",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4ubuntu0.24.04.3+esm1",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4ubuntu0.24.04.3+esm2",
"evidence": "/affected/1/versions"
},
{
"value": "5.4.2-4ubuntu0.24.04.3+esm3",
"evidence": "/affected/1/versions"
}
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},
{
"name": {
"value": "golang-github-go-git-go-git",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.14.0-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "golang-github-go-git-go-git",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.16.2-1",
"evidence": "/affected/3/versions"
},
{
"value": "5.19.1-1",
"evidence": "/affected/3/versions"
},
{
"value": "5.19.2-1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "golang-github-go-git-go-git",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.14.0-1",
"evidence": "/affected/4/versions"
},
{
"value": "5.16.2-1",
"evidence": "/affected/4/versions"
},
{
"value": "5.16.2-1ubuntu0.1~esm1",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "low",
"structured": {
"id": "UBUNTU-CVE-2026-33762",
"aliases": [
"UBUNTU-CVE-2026-33762"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-github-go-git-go-git",
"purl": "pkg:deb/ubuntu/golang-github-go-git-go-git?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"5.4.2-3",
"5.4.2-3ubuntu0.1~esm1",
"5.4.2-3ubuntu0.1~esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33762.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "go-git",
"binary_version": "5.4.2-3ubuntu0.1~esm2"
},
{
"binary_name": "golang-github-go-git-go-git-dev",
"binary_version": "5.4.2-3ubuntu0.1~esm2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-github-go-git-go-git",
"purl": "pkg:deb/ubuntu/golang-github-go-git-go-git?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"5.4.2-3build1",
"5.4.2-4",
"5.4.2-4ubuntu0.24.04.1",
"5.4.2-4ubuntu0.24.04.2",
"5.4.2-4ubuntu0.24.04.2+esm1",
"5.4.2-4ubuntu0.24.04.3",
"5.4.2-4ubuntu0.24.04.3+esm1",
"5.4.2-4ubuntu0.24.04.3+esm2",
"5.4.2-4ubuntu0.24.04.3+esm3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33762.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "go-git",
"binary_version": "5.4.2-4ubuntu0.24.04.3+esm3"
},
{
"binary_name": "golang-github-go-git-go-git-dev",
"binary_version": "5.4.2-4ubuntu0.24.04.3+esm3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
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]
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],
"package": {
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"purl": "pkg:deb/ubuntu/golang-github-go-git-go-git?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"5.14.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33762.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "go-git",
"binary_version": "5.14.0-1"
},
{
"binary_name": "golang-github-go-git-go-git-dev",
"binary_version": "5.14.0-1"
}
]
}
},
{
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],
"package": {
"name": "golang-github-go-git-go-git",
"purl": "pkg:deb/ubuntu/golang-github-go-git-go-git?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"5.16.2-1",
"5.19.1-1",
"5.19.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33762.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "go-git",
"binary_version": "5.19.2-1"
},
{
"binary_name": "golang-github-go-git-go-git-dev",
"binary_version": "5.19.2-1"
},
{
"binary_name": "golang-github-go-git-go-git-v5-dev",
"binary_version": "5.19.2-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
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],
"package": {
"name": "golang-github-go-git-go-git",
"purl": "pkg:deb/ubuntu/golang-github-go-git-go-git?arch=source&distro=esm-apps%2Fresolute",
"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
"5.14.0-1",
"5.16.2-1",
"5.16.2-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-33762.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "go-git",
"binary_version": "5.16.2-1ubuntu0.1~esm1"
},
{
"binary_name": "golang-github-go-git-go-git-dev",
"binary_version": "5.16.2-1ubuntu0.1~esm1"
}
]
}
}
],
"modified": "2026-10-17T13:00:00.833158100Z",
"provider": "osv",
"upstream": [
"CVE-2026-33762"
],
"references": [
"https://ubuntu.com/security/CVE-2026-33762",
"https://www.cve.org/CVERecord?id=CVE-2026-33762",
"https://github.com/go-git/go-git/releases/tag/v5.17.1",
"https://github.com/go-git/go-git/security/advisories/GHSA-gm2x-2g9h-ccm8"
]
},
"related_cves": [
{
"value": "CVE-2026-33762",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360119,
"published_at": "2026-03-31T15:16:00+00:00"
}