DEBIAN-CVE-2026-39894

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Source
https://security-tracker.debian.org/tracker/CVE-2026-39894
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39894.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-39894
Upstream
Published
2026-06-24T22:16:46Z
Modified
2026-09-14T17:03:10Z
Severity
  • 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
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

Debian:12 / cacti

Package

Name
cacti
Purl
pkg:deb/debian/cacti?arch=source&distro=bookworm

Affected ranges

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

Affected versions

1.*
1.2.24+ds1-1
1.2.24+ds1-1+deb12u1
1.2.24+ds1-1+deb12u2
1.2.24+ds1-1+deb12u3
1.2.24+ds1-1+deb12u4
1.2.24+ds1-1+deb12u5
1.2.25+ds1-1
1.2.25+ds1-2
1.2.26+ds1-1
1.2.27+ds1-1
1.2.27+ds1-2
1.2.28+ds1-1
1.2.28+ds1-2
1.2.28+ds1-3
1.2.28+ds1-4
1.2.30+ds1-1
1.2.30+ds1-2
1.2.30+ds1-3
1.2.31+ds1-1
1.2.31+ds1-2
1.2.31+ds1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39894.json"

Debian:13 / cacti

Package

Name
cacti
Purl
pkg:deb/debian/cacti?arch=source&distro=trixie

Affected ranges

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

Affected versions

1.*
1.2.30+ds1-1
1.2.30+ds1-2
1.2.30+ds1-3
1.2.31+ds1-1
1.2.31+ds1-2
1.2.31+ds1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39894.json"

Debian:14 / cacti

Package

Name
cacti
Purl
pkg:deb/debian/cacti?arch=source&distro=forky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.2.31+ds1-1

Affected versions

1.*
1.2.30+ds1-1
1.2.30+ds1-2
1.2.30+ds1-3

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39894.json"