# CVE-2026-40083 — cacti

> As of 2026-06-27, CVE-2026-40083 is a HIGH-severity vulnerability in cacti, CVSS v3.1 7.2, EPSS 0.2% (17.7th percentile). No Threadlinqs-tracked threat campaign has been attributed to CVE-2026-40083 as of 2026-06-27; the identifier is re-checked against the Threadlinqs threat corpus on every daily ingest.

**Last updated:** 2026-06-27

## What is 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.

The record classifies CVE-2026-40083 under weakness class [CWE-89](https://intel.threadlinqs.com/cwe/CWE-89). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs high-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 102 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 7.2 — HIGH (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **EPSS (FIRST):** 0.2% probability of exploitation in the next 30 days, higher than 17.7% of all scored CVEs
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.3/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-06-25, last modified 2026-06-27

## Is CVE-2026-40083 being exploited?

It currently carries a trending score of 34 in the Threadlinqs vulnerability feed.

## Affected products and versions

- [Cacti](https://intel.threadlinqs.com/vendors/cacti): cacti

## How to fix CVE-2026-40083

No vendor patch reference has been recorded for CVE-2026-40083 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-40083

No threat campaign in the Threadlinqs corpus currently references CVE-2026-40083, in its CVE list or as an indicator. The linkage is recomputed from the live corpus on every daily ingest, so this section fills in as soon as a tracked campaign cites the identifier.

## Sources

Enriched from CVE.org, NVD, FIRST EPSS. Last verified by Threadlinqs on 2026-06-28. This product uses the NVD API but is not endorsed or certified by the NVD.

**Vendor advisory and patch**

- [github.com](https://github.com/Cacti/cacti/security/advisories/GHSA-j9jv-6xjq-9hhj)

**Other references**

- [github.com](https://github.com/Cacti/cacti/releases/tag/release%2F1.2.31)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-40083
Full detection coverage and IOCs for threats exploiting CVE-2026-40083 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp