CVE-2026-39894: fallo de gravedad baja en cacti
Cacti: RRDtool metric shift via LC_NUMERIC locale comma decimal formatting
Publicada el · Actualizada el
8Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 2.9epss 0.1%
probabilidad de explotación
0.1%top 97% de las CVE
explotación observada
noninguna fuente lo reporta
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.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Productos afectados
Cacti · cactiCVEs relacionadas — cacti
En el mismo producto, de las más peligrosas a las menos.
CVE-2022-46169CRITICALUnauthenticated Command InjectionEPSS 99.8%KEVCVE-2024-29895CRITICALCacti command injection in cmd_realtime.phpEPSS 98.5%CVE-2023-39361CRITICALUnauthenticated SQL Injection in graph_view.php in CactiEPSS 88.8%CVE-2024-25641CRITICALCacti RCE vulnerability when importing packagesEPSS 86.3%CVE-2023-39362HIGHAuthenticated command injection in SNMP options of a DeviceEPSS 85.4%CVE-2023-49085HIGHCacti SQL Injection vulnerabilityEPSS 74.5%