Vulnerability Description
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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cacti | Cacti | < 1.2.31 |
Related Weaknesses (CWE)
References
- https://github.com/Cacti/cacti/commit/4c09efaebf3a9faec66969d0b5c4aceaf397f37fPatch
- https://github.com/Cacti/cacti/security/advisories/GHSA-xq98-376r-hv9jMitigationPatchVendor Advisory
FAQ
What is CVE-2026-40079?
CVE-2026-40079 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 esca...
How severe is CVE-2026-40079?
CVE-2026-40079 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-40079?
Check the references section above for vendor advisories and patch information. Affected products include: Cacti Cacti.