UBUNTU-CVE-2026-53788

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Source
https://ubuntu.com/security/CVE-2026-53788
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-53788
Upstream
Published
2026-08-13T15:19:00Z
Modified
2026-08-19T13:32:20Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

rsync before 3.5.0 contains a newline injection vulnerability in the name-converter uid/gid mapping interface that allows local attackers to forge protocol messages by creating user or group names containing newline characters. Attackers can inject malicious newline characters into names communicated over the pipe-based line-oriented protocol to cause the rsync daemon to process attacker-influenced data as legitimate protocol input, corrupting uid/gid mapping logic.

References

Affected packages

Ubuntu:22.04:LTS
rsync

Package

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

Affected ranges

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

Affected versions

3.*
3.2.3-4ubuntu1
3.2.3-4ubuntu2
3.2.3-8ubuntu1
3.2.3-8ubuntu2
3.2.3-8ubuntu3
3.2.3-8ubuntu3.1
3.2.7-0ubuntu0.22.04.2
3.2.7-0ubuntu0.22.04.3
3.2.7-0ubuntu0.22.04.4
3.2.7-0ubuntu0.22.04.6
3.2.7-0ubuntu0.22.04.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rsync",
            "binary_version": "3.2.7-0ubuntu0.22.04.7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json"
Ubuntu:24.04:LTS
rsync

Package

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

Affected ranges

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

Affected versions

3.*
3.2.7-1
3.2.7-1build1
3.2.7-1build2
3.2.7-1ubuntu1
3.2.7-1ubuntu1.1
3.2.7-1ubuntu1.2
3.2.7-1ubuntu1.4
3.2.7-1ubuntu1.5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rsync",
            "binary_version": "3.2.7-1ubuntu1.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json"
Ubuntu:26.04:LTS
rsync

Package

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

Affected ranges

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

Affected versions

3.*
3.4.1+ds1-5ubuntu1
3.4.1+ds1-6
3.4.1+ds1-7
3.4.1+ds1-7ubuntu0.2
3.4.1+ds1-7ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rsync",
            "binary_version": "3.4.1+ds1-7ubuntu0.3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json"
Ubuntu:Pro:14.04:LTS
rsync

Package

Name
rsync
Purl
pkg:deb/ubuntu/rsync?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

3.*
3.0.9-4ubuntu1
3.1.0-2
3.1.0-2ubuntu0.1
3.1.0-2ubuntu0.2
3.1.0-2ubuntu0.3
3.1.0-2ubuntu0.4
3.1.0-2ubuntu0.4+esm1
3.1.0-2ubuntu0.4+esm2
3.1.0-2ubuntu0.4+esm3
3.1.0-2ubuntu0.4+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rsync",
            "binary_version": "3.1.0-2ubuntu0.4+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json"
Ubuntu:Pro:16.04:LTS
rsync

Package

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

Affected ranges

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

Affected versions

3.*
3.1.1-3
3.1.1-3ubuntu1
3.1.1-3ubuntu1.1
3.1.1-3ubuntu1.2
3.1.1-3ubuntu1.3
3.1.1-3ubuntu1.3+esm1
3.1.1-3ubuntu1.3+esm2
3.1.1-3ubuntu1.3+esm3
3.1.1-3ubuntu1.3+esm4
3.1.1-3ubuntu1.3+esm5
3.1.1-3ubuntu1.3+esm6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rsync",
            "binary_version": "3.1.1-3ubuntu1.3+esm6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json"
Ubuntu:Pro:18.04:LTS
rsync

Package

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

Affected ranges

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

Affected versions

3.*
3.1.2-2
3.1.2-2.1
3.1.2-2.1ubuntu1
3.1.2-2.1ubuntu1.1
3.1.2-2.1ubuntu1.2
3.1.2-2.1ubuntu1.3
3.1.2-2.1ubuntu1.4
3.1.2-2.1ubuntu1.5
3.1.2-2.1ubuntu1.6
3.1.2-2.1ubuntu1.6+esm1
3.1.2-2.1ubuntu1.6+esm2
3.1.2-2.1ubuntu1.6+esm3
3.1.2-2.1ubuntu1.6+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rsync",
            "binary_version": "3.1.2-2.1ubuntu1.6+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json"
Ubuntu:Pro:20.04:LTS
rsync

Package

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

Affected ranges

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

Affected versions

3.*
3.1.3-6
3.1.3-8
3.1.3-8ubuntu0.1
3.1.3-8ubuntu0.2
3.1.3-8ubuntu0.3
3.1.3-8ubuntu0.4
3.1.3-8ubuntu0.5
3.1.3-8ubuntu0.7
3.1.3-8ubuntu0.8
3.1.3-8ubuntu0.9
3.1.3-8ubuntu0.9+esm1
3.1.3-8ubuntu0.9+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "rsync",
            "binary_version": "3.1.3-8ubuntu0.9+esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-53788.json"