---
id: CVE-2026-39902
title: 'Cacti: Authenticated RCE on Data Input'
summary: >-
  Cacti is an open source performance and fault management framework. Prior to
  version 1.2.31, the prior blocklist ([;&| `$\\n\r]) omitted single-quote,
  double-quote, redirect operators, subshell parens and braces. An authenticated
  admin c…
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-78
vendor: Cacti
product: cacti
affected:
  - cacti < 1.2.31
exploitAvailable: true
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T14:42:45.710Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-39902'
references:
  - url: 'https://github.com/Cacti/cacti/security/advisories/GHSA-c4qp-j9r9-fq24'
    label: 'https://github.com/Cacti/cacti/security/advisories/GHSA-c4qp-j9r9-fq24'
  - url: 'https://github.com/Cacti/cacti/pull/7112'
    label: 'https://github.com/Cacti/cacti/pull/7112'
tags:
  - cve.org
  - exploit-available
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/kx00007/CVE-2026-39902'
  checkedAt: '2026-10-23T15:30:10.899Z'
ingestedAt: '2026-10-23T15:29:36.882Z'
---

## Overview

Cacti is an open source performance and fault management framework. Prior to version 1.2.31, the prior blocklist ([;&| `$\\n\r]) omitted single-quote, double-quote, redirect operators, subshell parens and braces. An authenticated admin could save an input_string` containing single-quote, redirect operator, or subshell parens, and pass the check. This issue has been patched in version 1.2.31.

## Affected

- `cacti < 1.2.31`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.