UBUNTU-CVE-2026-35025

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Source
https://ubuntu.com/security/CVE-2026-35025
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-35025
Upstream
Published
2026-06-24T14:17:00Z
Modified
2026-06-25T19:15:28.271467572Z
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

ProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL restrictions by prefixing paths with /proc/self/root in the RNFR command handler. Attackers can exploit the unresolved symlink components in dircanonicalpath() to cause dir_check() to perform lexical path comparisons that match no configured Directory block, enabling rename operations on files in DenyAll-protected directories and subsequent retrieval of those files. Mitigation: Sessions configured with DefaultRoot (chroot) are not affected, as chroot changes the directory to which /proc/self/root resolves.

References

Affected packages

Ubuntu:16.04:LTS
proftpd-dfsg

Package

Name
proftpd-dfsg
Purl
pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=xenial

Affected ranges

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

Affected versions

1.*
1.3.5-2
1.3.5a-1
1.3.5a-1build1
1.3.5a-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "proftpd-basic",
            "binary_version": "1.3.5a-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.5a-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.5a-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.5a-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.5a-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.5a-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.5a-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json"
Ubuntu:18.04:LTS
proftpd-dfsg

Package

Name
proftpd-dfsg
Purl
pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=bionic

Affected ranges

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

Affected versions

1.*
1.3.5d-1
1.3.5e-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "proftpd-basic",
            "binary_version": "1.3.5e-1build1"
        },
        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.5e-1build1"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.5e-1build1"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.5e-1build1"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.5e-1build1"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.5e-1build1"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.5e-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json"
Ubuntu:20.04:LTS
proftpd-dfsg

Package

Name
proftpd-dfsg
Purl
pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=focal

Affected ranges

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

Affected versions

1.*
1.3.6-6build2
1.3.6c-1
1.3.6c-2
1.3.6c-2ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "proftpd-basic",
            "binary_version": "1.3.6c-2ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.6c-2ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.6c-2ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.6c-2ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.6c-2ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.6c-2ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.6c-2ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.6c-2ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json"
Ubuntu:22.04:LTS
proftpd-dfsg

Package

Name
proftpd-dfsg
Purl
pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.3.7b+dfsg-1
1.3.7c+dfsg-1build1
1.3.7c+dfsg-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "proftpd-basic",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-core",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-crypto",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-wrap",
            "binary_version": "1.3.7c+dfsg-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json"
Ubuntu:24.04:LTS
proftpd-dfsg

Package

Name
proftpd-dfsg
Purl
pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.3.8+dfsg-8
1.3.8.a+dfsg-1
1.3.8.b+dfsg-1
1.3.8.b+dfsg-1build1
1.3.8.b+dfsg-1build2
1.3.8.b+dfsg-1build3
1.3.8.b+dfsg-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "proftpd-core",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-crypto",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "proftpd-mod-wrap",
            "binary_version": "1.3.8.b+dfsg-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json"
Ubuntu:25.10
proftpd-dfsg

Package

Name
proftpd-dfsg
Purl
pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.3.8.c+dfsg-2
1.3.8.c+dfsg-4
1.3.9~dfsg-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "proftpd-core",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-crypto",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.9~dfsg-3"
        },
        {
            "binary_name": "proftpd-mod-wrap",
            "binary_version": "1.3.9~dfsg-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json"
Ubuntu:26.04:LTS
proftpd-dfsg

Package

Name
proftpd-dfsg
Purl
pkg:deb/ubuntu/proftpd-dfsg?arch=source&distro=resolute

Affected ranges

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

Affected versions

1.*
1.3.9~dfsg-3
1.3.9~dfsg-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "proftpd-core",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-crypto",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-geoip",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-ldap",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-mysql",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-odbc",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-pgsql",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-snmp",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-sqlite",
            "binary_version": "1.3.9~dfsg-4"
        },
        {
            "binary_name": "proftpd-mod-wrap",
            "binary_version": "1.3.9~dfsg-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-35025.json"