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9.8
CVE-2026-39893: Cacti versions 1.2.30 and prior: Unauthenticated SQL Injection
CVE-2026-39893
Summary
Cacti's performance monitoring tool has a security flaw in versions 1.2.30 and earlier. An attacker can inject malicious code into the system without needing a login, potentially allowing them to access sensitive data. To fix this, update to version 1.2.31 or later.
Original title
Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the rfilter request variable was concatenated into a RLIKE SQL clause without sanitization. The end...
Original description
Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the rfilter request variable was concatenated into a RLIKE SQL clause without sanitization. The endpoint does not require authentication (graph viewing supports guest access via the configured guest user), so the SQLi was reachable pre-auth on installs with guest viewing enabled. This issue was fixed in version 1.2.31.
nvd CVSS3.1
9.8
Vulnerability type
CWE-89
SQL Injection
Published: 24 Jun 2026 · Updated: 23 Jul 2026 · First seen: 24 Jun 2026