UBUNTU-CVE-2026-100407

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Source
https://ubuntu.com/security/CVE-2026-100407
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-100407
Upstream
Published
2026-11-04T00:00:00Z
Modified
2026-11-05T11:45:15Z
Severity
  • 4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Git for Windows is the Windows port of Git. From 2.44.0.windows.1 until 2.55.0.windows.3, the git-credential-wincred store operation in contrib/credential/wincred/git-credential-wincred.c uses _scwprintf() to size a formatted wide-character credential buffer without space for the terminating NUL when both password and oauth_refresh_token are present. The operation also passes a byte count to _snwprintf_s() where a wide-character count is required, allowing the terminator to be written one WCHAR past the heap allocation before CredWriteW() persists the credential. The resulting fixed two-byte NUL overwrite can terminate the helper with Windows heap-corruption status and can cause git credential approve to report success even though the OAuth credential was not stored. This issue is fixed in version 2.55.0.windows.3.

References

Affected packages

Ubuntu:22.04:LTS
git

Package

Name
git
Purl
pkg:deb/ubuntu/git?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.32.0-1ubuntu1
1:2.33.1-1ubuntu1
1:2.34.1-1ubuntu1
1:2.34.1-1ubuntu1.1
1:2.34.1-1ubuntu1.2
1:2.34.1-1ubuntu1.4
1:2.34.1-1ubuntu1.5
1:2.34.1-1ubuntu1.6
1:2.34.1-1ubuntu1.8
1:2.34.1-1ubuntu1.9
1:2.34.1-1ubuntu1.10
1:2.34.1-1ubuntu1.11
1:2.34.1-1ubuntu1.12
1:2.34.1-1ubuntu1.13
1:2.34.1-1ubuntu1.14
1:2.34.1-1ubuntu1.15
1:2.34.1-1ubuntu1.16
1:2.34.1-1ubuntu1.17
1:2.34.1-1ubuntu1.18

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "git",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-all",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-cvs",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-daemon-run",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-daemon-sysvinit",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-email",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-gui",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-man",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-mediawiki",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "git-svn",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "gitk",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        },
        {
            "binary_name": "gitweb",
            "binary_version": "1:2.34.1-1ubuntu1.18"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json"
Ubuntu:24.04:LTS
git

Package

Name
git
Purl
pkg:deb/ubuntu/git?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.40.1-1ubuntu1
1:2.43.0-1ubuntu1
1:2.43.0-1ubuntu5
1:2.43.0-1ubuntu6
1:2.43.0-1ubuntu7
1:2.43.0-1ubuntu7.1
1:2.43.0-1ubuntu7.2
1:2.43.0-1ubuntu7.3
1:2.43.0-1ubuntu7.4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "git",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-all",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-cvs",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-daemon-run",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-daemon-sysvinit",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-email",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-gui",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-man",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-mediawiki",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "git-svn",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "gitk",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        },
        {
            "binary_name": "gitweb",
            "binary_version": "1:2.43.0-1ubuntu7.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json"
Ubuntu:26.04:LTS
git

Package

Name
git
Purl
pkg:deb/ubuntu/git?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.51.0-1ubuntu1
1:2.53.0-1ubuntu1
1:2.53.0-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "git",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-all",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-cvs",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-email",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-gui",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-man",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-svn",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "gitk",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        },
        {
            "binary_name": "gitweb",
            "binary_version": "1:2.53.0-1ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json"
Ubuntu:26.10
git

Package

Name
git
Purl
pkg:deb/ubuntu/git?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.53.0-1ubuntu1
1:2.55.0-1ubuntu1
1:2.55.0-1ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "git",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-all",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-cvs",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-email",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-gui",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-man",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "git-svn",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "gitk",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        },
        {
            "binary_name": "gitweb",
            "binary_version": "1:2.55.0-1ubuntu1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json"
Ubuntu:Pro:16.04:LTS
git

Package

Name
git
Purl
pkg:deb/ubuntu/git?arch=source&distro=esm-infra%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.5.0-1
1:2.6.2-1
1:2.6.3-1
1:2.6.4-1
1:2.7.0~rc3-1
1:2.7.0-1
1:2.7.3-0ubuntu1
1:2.7.4-0ubuntu1
1:2.7.4-0ubuntu1.1
1:2.7.4-0ubuntu1.2
1:2.7.4-0ubuntu1.3
1:2.7.4-0ubuntu1.4
1:2.7.4-0ubuntu1.5
1:2.7.4-0ubuntu1.6
1:2.7.4-0ubuntu1.7
1:2.7.4-0ubuntu1.8
1:2.7.4-0ubuntu1.9
1:2.7.4-0ubuntu1.10
1:2.7.4-0ubuntu1.10+esm1
1:2.7.4-0ubuntu1.10+esm3
1:2.7.4-0ubuntu1.10+esm4
1:2.7.4-0ubuntu1.10+esm5
1:2.7.4-0ubuntu1.10+esm6
1:2.7.4-0ubuntu1.10+esm7
1:2.7.4-0ubuntu1.10+esm8
1:2.7.4-0ubuntu1.10+esm9
1:2.7.4-0ubuntu1.10+esm10
1:2.7.4-0ubuntu1.10+esm11
1:2.7.4-0ubuntu1.10+esm13

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "git",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-all",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-arch",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-core",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-cvs",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-daemon-run",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-daemon-sysvinit",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-el",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-email",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-gui",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-man",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-mediawiki",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "git-svn",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "gitk",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        },
        {
            "binary_name": "gitweb",
            "binary_version": "1:2.7.4-0ubuntu1.10+esm13"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json"
Ubuntu:Pro:18.04:LTS
git

Package

Name
git
Purl
pkg:deb/ubuntu/git?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.14.1-1ubuntu4
1:2.15.1-1ubuntu2
1:2.17.0-1ubuntu1
1:2.17.1-1ubuntu0.1
1:2.17.1-1ubuntu0.3
1:2.17.1-1ubuntu0.4
1:2.17.1-1ubuntu0.5
1:2.17.1-1ubuntu0.6
1:2.17.1-1ubuntu0.7
1:2.17.1-1ubuntu0.8
1:2.17.1-1ubuntu0.9
1:2.17.1-1ubuntu0.10
1:2.17.1-1ubuntu0.11
1:2.17.1-1ubuntu0.12
1:2.17.1-1ubuntu0.13
1:2.17.1-1ubuntu0.14
1:2.17.1-1ubuntu0.15
1:2.17.1-1ubuntu0.16
1:2.17.1-1ubuntu0.17
1:2.17.1-1ubuntu0.18
1:2.17.1-1ubuntu0.18+esm1
1:2.17.1-1ubuntu0.18+esm2
1:2.17.1-1ubuntu0.18+esm3
1:2.17.1-1ubuntu0.18+esm4
1:2.17.1-1ubuntu0.18+esm6
1:2.17.1-1ubuntu0.18+esm8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "git",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-all",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-cvs",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-daemon-run",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-daemon-sysvinit",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-el",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-email",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-gui",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-man",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-mediawiki",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "git-svn",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "gitk",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        },
        {
            "binary_name": "gitweb",
            "binary_version": "1:2.17.1-1ubuntu0.18+esm8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json"
Ubuntu:Pro:20.04:LTS
git

Package

Name
git
Purl
pkg:deb/ubuntu/git?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1:2.*
1:2.20.1-2ubuntu1
1:2.24.0-1ubuntu1
1:2.24.0-1ubuntu2
1:2.25.0-1ubuntu1
1:2.25.1-1ubuntu1
1:2.25.1-1ubuntu2
1:2.25.1-1ubuntu3
1:2.25.1-1ubuntu3.1
1:2.25.1-1ubuntu3.2
1:2.25.1-1ubuntu3.3
1:2.25.1-1ubuntu3.4
1:2.25.1-1ubuntu3.5
1:2.25.1-1ubuntu3.6
1:2.25.1-1ubuntu3.7
1:2.25.1-1ubuntu3.8
1:2.25.1-1ubuntu3.10
1:2.25.1-1ubuntu3.11
1:2.25.1-1ubuntu3.12
1:2.25.1-1ubuntu3.13
1:2.25.1-1ubuntu3.14
1:2.25.1-1ubuntu3.14+esm1
1:2.25.1-1ubuntu3.14+esm2
1:2.25.1-1ubuntu3.14+esm3
1:2.25.1-1ubuntu3.14+esm4
1:2.25.1-1ubuntu3.14+esm5
1:2.25.1-1ubuntu3.14+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "git",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-all",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-cvs",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-daemon-run",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-daemon-sysvinit",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-el",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-email",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-gui",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-man",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-mediawiki",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "git-svn",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "gitk",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        },
        {
            "binary_name": "gitweb",
            "binary_version": "1:2.25.1-1ubuntu3.14+esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-100407.json"