CVE-2026-40084: Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Path Traversal through the Report format_file Parameter, causing ar
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Path Traversal through the Report format_file Parameter, causing arbitrary file read. This vulnerability occurs in two stages. In the first stage (stored injection), lib/html_reports.php at line 283 stores $save['format_file'] = $post['format_file'] directly into the database without any validation. In the second stage (file read), lib/reports.php at line 667 concatenates CACTI_PATH_FORMATS . '/' . $format_file, and line 670 then calls file($format_file), reading arbitrary files from the filesystem. This issue has been fixed in version 1.2.31.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-40084
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-400840.32% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 24% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-40084 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for Cacti is an
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-40941: Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior …nvd · 2026-06-25
- highCVE-2026-40083: Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior …nvd · 2026-06-25
- mediumCVE-2026-40082: Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior …nvd · 2026-06-25
- mediumCVE-2026-40080: Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior …nvd · 2026-06-25
- criticalexploitedCVE-2022-46169: Cacti Command Injection Vulnerabilitycisa-kev · 2023-02-16
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