UBUNTU-CVE-2026-39894

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Source
https://ubuntu.com/security/CVE-2026-39894
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-39894
Upstream
  • CVE-2026-39894
Published
2026-06-26T00:00:00Z
Modified
2026-06-26T12:28:20.994671478Z
Severity
  • 2.9 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Cacti is an open source performance and fault management framework. In versions 1.2.30 and below, the locale-dependent decimal formatting in rrdtoolfunctionupdate() can corrupt RRDtool metric values. The rrdtoolfunctionupdate() function checks metric values with isnumeric() and concatenates them into the RRDtool update command via PHP string interpolation. PHP's string cast of floats is locale-sensitive: if LCNUMERIC uses comma as decimal separator (e.g., de_DE), a value of 1.5 becomes "1,5". RRDtool expects . as decimal separator, causing metric data to shift into wrong columns or be silently dropped. No setlocale() reset is present in the update path. This causes a data integrity issue, but is not remotely exploitable; it requires server locale misconfiguration. The issue has been fixed in version 1.2.31.

References

Affected packages

Ubuntu:24.04:LTS
cacti

Package

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

Affected ranges

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

Affected versions

1.*
1.2.25+ds1-2
1.2.26+ds1-1
1.2.26+ds1-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.2.26+ds1-1ubuntu0.1",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"
Ubuntu:25.10
cacti

Package

Name
cacti
Purl
pkg:deb/ubuntu/cacti?arch=source&distro=questing

Affected ranges

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

Affected versions

1.*
1.2.28+ds1-4ubuntu1
1.2.30+ds1-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.2.30+ds1-1ubuntu1",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"
Ubuntu:26.04:LTS
cacti

Package

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

Affected ranges

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

Affected versions

1.*
1.2.30+ds1-1ubuntu1
1.2.30+ds1-1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.2.30+ds1-1ubuntu2",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"
Ubuntu:Pro:14.04:LTS
cacti

Package

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

Affected ranges

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

Affected versions

0.*
0.8.8b+dfsg-3
0.8.8b+dfsg-5
0.8.8b+dfsg-5ubuntu0.1
0.8.8b+dfsg-5ubuntu0.2
0.8.8b+dfsg-5ubuntu0.2+esm1
0.8.8b+dfsg-5ubuntu0.2+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.8.8b+dfsg-5ubuntu0.2+esm2",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"
Ubuntu:Pro:16.04:LTS
cacti

Package

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

Affected ranges

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

Affected versions

0.*
0.8.8f+ds1-2
0.8.8f+ds1-3
0.8.8f+ds1-4
0.8.8f+ds1-4ubuntu1
0.8.8f+ds1-4ubuntu2
0.8.8f+ds1-4ubuntu3
0.8.8f+ds1-4ubuntu4
0.8.8f+ds1-4ubuntu4.16.04
0.8.8f+ds1-4ubuntu4.16.04.1
0.8.8f+ds1-4ubuntu4.16.04.2
0.8.8f+ds1-4ubuntu4.16.04.2+esm1
0.8.8f+ds1-4ubuntu4.16.04.2+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.8.8f+ds1-4ubuntu4.16.04.2+esm2",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"
Ubuntu:Pro:18.04:LTS
cacti

Package

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

Affected ranges

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

Affected versions

1.*
1.1.18+ds1-1
1.1.27+ds1-2
1.1.27+ds1-3
1.1.28+ds1-2
1.1.35+ds1-1
1.1.36+ds1-1
1.1.38+ds1-1
1.1.38+ds1-1ubuntu0.1~esm1
1.1.38+ds1-1ubuntu0.1~esm3
1.1.38+ds1-1ubuntu0.1~esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.1.38+ds1-1ubuntu0.1~esm4",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"
Ubuntu:Pro:20.04:LTS
cacti

Package

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

Affected ranges

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

Affected versions

1.*
1.2.4+ds1-2ubuntu3
1.2.9+ds1-1ubuntu1
1.2.9+ds1-1ubuntu2
1.2.10+ds1-1ubuntu1
1.2.10+ds1-1ubuntu1+esm1
1.2.10+ds1-1ubuntu1.1
1.2.10+ds1-1ubuntu1.1+esm1
1.2.10+ds1-1ubuntu1.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.2.10+ds1-1ubuntu1.1+esm2",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"
Ubuntu:Pro:22.04:LTS
cacti

Package

Name
cacti
Purl
pkg:deb/ubuntu/cacti?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

1.*
1.2.16+ds1-2ubuntu1
1.2.19+ds1-2ubuntu1
1.2.19+ds1-2ubuntu1+esm1
1.2.19+ds1-2ubuntu1.1
1.2.19+ds1-2ubuntu1.1+esm1
1.2.19+ds1-2ubuntu1.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.2.19+ds1-2ubuntu1.1+esm2",
            "binary_name": "cacti"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-39894.json"