SQL Injection in Cacti
CVE-2026-40083
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior have SQL Injection through unsanitized unserialize+implode in managers.php. At line 756 of managers.php, the application assigns $selected_items by calling cacti_unserialize(stripslashes(gnrv('selected_graphs_array'))). The cacti_unserialize() function calls unserialize() with allowed_classes set to false, which prevents object injection but still allows arbitrary string arrays to be deserialized. Then, at lines 760 to 766, the deserialized array values are passed directly into db_execute('DELETE FROM snmpagent_managers WHERE id IN (' . implode(',', $selected_items) . ')'), where they are imploded into the SQL statement without any integer validation, resulting in SQL Injection when using SNMP agent management permissions. This issue has been fixed in version 1.2.31.
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Cacti — versions < 1.2.31
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/Cacti/cacti/releases/tag/release/1.2.31 (Product, Release Notes)
- github.com/Cacti/cacti/security/advisories/GHSA-j9jv-6xjq-9hhj (Exploit, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-40083?
- CVE-2026-40083 is a high-severity vulnerability in Cacti, classified under SQL Injection. CVSS score: 7.2/10. Published 2026-06-25.
- How severe is CVE-2026-40083?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2026-40083 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.