---
id: CVE-2026-22200
title: 'osTicket (1.18.x < 1.18.3, 1.17.x < 1.17.7) PDF Export Arbitrary File Read'
summary: >-
  Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to
  1.17.7 contain an arbitrary file read vulnerability in the ticket PDF export
  functionality. A remote attacker can submit a ticket containing crafted
  rich-text HTML …
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-74
vendor: Enhancesoft
product: osTicket
affected:
  - osTicket >= 1.18.0 < 1.18.3
  - osTicket >= 1.17.0 < 1.17.7
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-01-12T19:11:30.771364Z'
exploitAvailable: true
published: '2026-01-12'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:01:10.876Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-22200'
references:
  - url: 'https://github.com/osTicket/osTicket/releases/tag/v1.18.3'
    label: osTicket 1.18.3 Release Notes
  - url: 'https://github.com/osTicket/osTicket/releases/tag/v1.17.7'
    label: osTicket 1.17.7 Release Notes
  - url: 'https://github.com/osTicket/osTicket/commit/c59b067'
  - url: >-
      https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/
  - url: >-
      https://www.vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read
tags:
  - cve.org
  - exploit-available
epss: 0.73589
epssPercentile: 0.99472
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/horizon3ai/CVE-2026-22200'
  metasploit:
    - auxiliary/gather/osticket_arbitrary_file_read
  nuclei:
    - CVE-2026-22200
  checkedAt: '2026-11-08T14:51:57.352Z'
ingestedAt: '2026-11-08T14:51:22.478Z'
---

## Overview

Enhancesoft osTicket versions 1.18.x prior to 1.18.3 and 1.17.x prior to 1.17.7 contain an arbitrary file read vulnerability in the ticket PDF export functionality. A remote attacker can submit a ticket containing crafted rich-text HTML that includes PHP filter expressions which are insufficiently sanitized before being processed by the mPDF PDF generator during export. When the attacker exports the ticket to PDF, the generated PDF can embed the contents of attacker-selected files from the server filesystem as bitmap images, allowing disclosure of sensitive local files in the context of the osTicket application user. This issue is exploitable in default configurations where guests may create tickets and access ticket status, or where self-registration is enabled.

## Affected

- `osTicket >= 1.18.0 < 1.18.3`
- `osTicket >= 1.17.0 < 1.17.7`

## Remediation

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