High
golang-github-go-git-go-git — security advisory
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malformed headers, go-git’s decoded representation may expose values differently from how Git itself would interpret or reject the same object. Additionally, go-git’s commit signing and verification logic operates over commit data reconstructed from go-git’s parsed representation rather than the original raw object bytes. As a result, go-git may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository. This can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed. This vulnerability is fixed in 5.19.0 and 6.0.0-alpha.3.
- 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-2026-45022
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 02:13 UTC · Revision 1
Source evidence
go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malformed headers, go-git’s decoded representation may expose values differently from how Git itself would interpret or reject the same object. Additionally, go-git’s commit signing and verification logic operates over commit data reconstructed from go-git’s parsed representation rather than the original raw object bytes. As a result, go-git may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository. This can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed. This vulnerability is fixed in 5.19.0 and 6.0.0-alpha.3.
osv:UBUNTU-CVE-2026-45022
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": "e6b90ff81e698cea5784f804026a3bcac6f74ca3bd71f4e5e812afdb3d16533f",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-45022",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-45022",
"summary": "go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malformed headers, go-git’s decoded representation may expose values differently from how Git itself would interpret or reject the same object. Additionally, go-git’s commit signing and verification logic operates over commit data reconstructed from go-git’s parsed representation rather than the original raw object bytes. As a result, go-git may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository. This can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed. This vulnerability is fixed in 5.19.0 and 6.0.0-alpha.3.",
"evidence": "osv:UBUNTU-CVE-2026-45022",
"products": [
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"evidence": "/affected/0/versions"
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{
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"evidence": "/affected/0/versions"
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{
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{
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{
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{
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"evidence": "/affected/1/versions"
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{
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"evidence": "/affected/1/versions"
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{
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{
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{
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],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-45022",
"aliases": [
"UBUNTU-CVE-2026-45022"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
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"affected": [
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"purl": "pkg:deb/ubuntu/golang-github-go-git-go-git?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
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"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-2026-45022.json"
},
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{
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{
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"purl": "pkg:deb/ubuntu/golang-github-go-git-go-git?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
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"5.4.2-4",
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"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",
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"modified": "2026-10-17T12:58:21.951006813Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-45022",
"https://www.cve.org/CVERecord?id=CVE-2026-45022",
"https://github.com/go-git/go-git/security/advisories/GHSA-389r-gv7p-r3rp"
]
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"evidence": "/upstream"
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"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 358605,
"published_at": "2026-05-27T15:16:00+00:00"
}