by Kastro
Paper/Archive/CVE-2026-40079

CVE-2026-40079

Cacti cacti — Cacti: Command Injection via escape_command() no-op in RRDtool execution

EPSS 2%CVSS 9.8
critical.is priorityof 100
45
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 77.1.771 × 2015.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Command Injection due to lack of sanitization in the escape_command() function. The escape_command() function at lib/rrd.php is a no-op: it returns $command unchanged. The command line built by rrdtool_function_graph() is passed through this function and then to shell_exec($full_commandline). The risk is in __rrd_execute() where text_format values from graph templates (which may contain host variable substitutions) reach shell_exec without adequate escaping. This issue has been addressed in version 1.2.31.

Affected

ProductAffectedFixed inSource
cacti< 1.2.31–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)8.6CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/Cacti/cacti/security/advisories/GHSA-xq98-376r-hv9jrefgithub.com/Cacti/cacti/commit/4c09efaebf3a9faec66969d0b5c4aceaf397f37f