CVE-2026-39902

HIGH CVSS 3.1: 7.2 EPSS 0.57%
Updated Oct 23, 2026
Cacti
Parameter Value
CVSS 7.2 (HIGH)
Fixed In 1.2.31
Type CWE-78 (OS Command Injection)
Vendor Cacti
Public PoC No

Cacti is an open source performance and fault management framework. Prior to version 1.2.31, the prior blocklist ([;&| `$\\n\r]) omitted single-quote, double-quote, redirect operators, subshell parens and braces. An authenticated admin could save an input_string` containing single-quote, redirect operator, or subshell parens, and pass the check.

This issue has been patched in version 1.2.31.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

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