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
Published
2026-06-24T22:16:00Z
Modified
2026-06-29T21:20:02Z
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
  • 2.5 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/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 rrdtool_function_update() can corrupt RRDtool metric values. The rrdtool_function_update() function checks metric values with is_numeric() and concatenates them into the RRDtool update command via PHP string interpolation. PHP's string cast of floats is locale-sensitive: if LC_NUMERIC 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
0 Unknown 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_name": "cacti",
            "binary_version": "1.2.26+ds1-1ubuntu0.1"
        }
    ]
}

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
0 Unknown introduced version / All previous versions are affected

Affected versions

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

Ecosystem specific 

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

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
0 Unknown introduced version / All previous versions are affected

Affected versions

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

Ecosystem specific 

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

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
0 Unknown 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_name": "cacti",
            "binary_version": "0.8.8b+dfsg-5ubuntu0.2+esm2"
        }
    ]
}

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
0 Unknown 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_name": "cacti",
            "binary_version": "0.8.8f+ds1-4ubuntu4.16.04.2+esm2"
        }
    ]
}

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
0 Unknown 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_name": "cacti",
            "binary_version": "1.1.38+ds1-1ubuntu0.1~esm4"
        }
    ]
}

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
0 Unknown 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_name": "cacti",
            "binary_version": "1.2.10+ds1-1ubuntu1.1+esm2"
        }
    ]
}

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
0 Unknown 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_name": "cacti",
            "binary_version": "1.2.19+ds1-2ubuntu1.1+esm2"
        }
    ]
}

Database specific

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