by Kastro
Paper/Archive/CVE-2026-39893

CVE-2026-39893

Cacti cacti — Cacti: Pre-authentication SQL injection via rfilter RLIKE clause in graph_view.php

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 52.2.522 × 2010.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
cacti< 1.2.31–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/Cacti/cacti/security/advisories/GHSA-69gg-mjfm-jjpcrefgithub.com/Cacti/cacti/pull/7039