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CVE-2026-40084— Cacti: Arbitrary File Read via Path Traversal in Report `format_file` Parameter

Quick assessment

Affected
Cacti cacti
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cacti是Cacti团队开源的一款日志分析与审计软件。 Cacti 1.2.30及之前版本存在路径遍历漏洞，该漏洞源于Report的format_file参数导致路径遍历，可能造成任意文件读取。

CVSS 6.5 · Medium EPSS 0.49% · P40

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cacti cacti < 1.2.31 affected
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I. Basic Information for CVE-2026-40084

Vulnerability Information
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Vulnerability Title
Cacti: Arbitrary File Read via Path Traversal in Report `format_file` Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Cacti 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cacti是Cacti团队开源的一款日志分析与审计软件。 Cacti 1.2.30及之前版本存在路径遍历漏洞，该漏洞源于Report的format_file参数导致路径遍历，可能造成任意文件读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cacti cacti < 1.2.31 -

II. Public POCs for CVE-2026-40084

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III. Intelligence Information for CVE-2026-40084

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Vendor Advisories for CVE-2026-40084 (1)

Same Patch Batch · Cacti · 2026-06-25 · 5 CVEs total

CVE-2026-40083 7.2 HIGH Cacti: SQL Injection in managers.php
CVE-2026-40080 6.1 MEDIUM Cacti: Open Redirect via HTTP_REFERER substring check in auth_login_redirect
CVE-2026-40082 5.4 MEDIUM Cacti: Session Fixation via missing session_regenerate_id() after login
CVE-2026-40941 Cacti: Package Import Signature Validation Bypass Allows Self-Signed Packages

IV. Related Vulnerabilities

Same product: cacti
Same vendor: Cacti
Same weakness: CWE-22

V. Comments for CVE-2026-40084

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