Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the rfilter request parameter is retrieved via the raw accessor grv() (rather than gfrv() with FILTER_VALIDATE_IS_REGEX validation) and concatenated directly into RLIKE SQL clauses in lib/html_graph.php and lib/html_tree.php, which are reachable pre-authentication through graph_view.php on installations with guest graph viewing enabled. Because the unbalanced-quote payload bypasses the regex validation that would otherwise reject it, an unauthenticated attacker can inject arbitrary SQL to compromise the confidentiality, integrity, and availability of the database. This advisory is similar to GHSA-69gg-mjfm-jjpc. This issue has been fixed in version 1.2.31.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 9647af6d-7a05-11f1-99fc-40b034429ecf advisory.

    Cacti project reports:
    This release includes fixes for a number of vulnerabilities that were responsibly disclosed by external     researchers

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Cacti is an open source performance and fault management framework. In versions 1.2.30 and prior, the     rfilter request parameter is retrieved via the raw accessor grv() (rather than gfrv() with     FILTER_VALIDATE_IS_REGEX validation) and concatenated directly into RLIKE SQL clauses in     lib/html_graph.php and lib/html_tree.php, which are reachable pre-authentication through graph_view.php on     installations with guest graph viewing enabled. Because the unbalanced-quote payload bypasses the regex     validation that would otherwise reject it, an unauthenticated attacker can inject arbitrary SQL to     compromise the confidentiality, integrity, and availability of the database. This advisory is similar to     GHSA-69gg-mjfm-jjpc. This issue has been fixed in version 1.2.31. (CVE-2026-39948)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
325775	FreeBSD : cacti -- multiple vulnerabilities (9647af6d-7a05-11f1-99fc-40b034429ecf)	Nessus	FreeBSD Local Security Checks	critical
323804	Linux Distros Unpatched Vulnerability : CVE-2026-39948	Nessus	Misc.	critical

Detections

Analytics

CVE-2026-39948

critical

Tenable Plugins

critical

critical