UBUNTU-CVE-2026-70463

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Source
https://ubuntu.com/security/CVE-2026-70463
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-70463.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-70463
Upstream
Published
2026-08-13T15:20:00Z
Modified
2026-08-19T13:33:01Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
  • 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name where the group name contains a space. The space within the group name causes the parser to split the entry at the space boundary, discarding the deny rule associated with the group. An authenticated user whose username or group membership would be denied by an @Group Name auth users entry can connect to a restricted module because the deny rule is silently discarded during parsing.

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-2026-70463.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-2026-70463.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-2026-70463.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-2026-70463.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-2026-70463.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-2026-70463.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-2026-70463.json"