CVE-2026-22200

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-22200
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.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/osTicket/osTicket/commit/c59b067 Patch
https://github.com/osTicket/osTicket/releases/tag/v1.17.7 Release Notes
https://github.com/osTicket/osTicket/releases/tag/v1.18.3 Release Notes
https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/ Exploit
https://www.vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:enhancesoft:osticket:*:*:*:*:*:*:*:*
cpe:2.3:a:enhancesoft:osticket:*:*:*:*:*:*:*:*
History

27 Jan 2026, 20:27

Type Values Removed Values Added
References () https://github.com/osTicket/osTicket/commit/c59b067 - () https://github.com/osTicket/osTicket/commit/c59b067 - Patch
References () https://github.com/osTicket/osTicket/releases/tag/v1.17.7 - () https://github.com/osTicket/osTicket/releases/tag/v1.17.7 - Release Notes
References () https://github.com/osTicket/osTicket/releases/tag/v1.18.3 - () https://github.com/osTicket/osTicket/releases/tag/v1.18.3 - Release Notes
References () https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/ - () https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/ - Exploit
References () https://www.vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read - () https://www.vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read - Third Party Advisory
CPE cpe:2.3:a:enhancesoft:osticket:*:*:*:*:*:*:*:*
First Time Enhancesoft osticket
Enhancesoft
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5

22 Jan 2026, 17:16

Type Values Removed Values Added
References
  • () https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/ -

20 Jan 2026, 16:16

Type Values Removed Values Added
References
  • () https://github.com/osTicket/osTicket/releases/tag/v1.17.7 -
Summary (en) Enhancesoft osTicket versions 1.18.3 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. (en) 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.

15 Jan 2026, 21:16

Type Values Removed Values Added
Summary (en) Enhancesoft osTicket versions up to and including 1.18.2 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. (en) Enhancesoft osTicket versions 1.18.3 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.
References
  • {'url': 'https://github.com/osTicket/osTicket', 'source': 'disclosure@vulncheck.com'}
  • {'url': 'https://osticket.com/', 'source': 'disclosure@vulncheck.com'}
  • () https://github.com/osTicket/osTicket/commit/c59b067 -
  • () https://github.com/osTicket/osTicket/releases/tag/v1.18.3 -

12 Jan 2026, 19:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-01-12 19:16

Updated : 2026-01-27 20:27

NVD link : CVE-2026-22200

Mitre link : CVE-2026-22200

CVE.ORG link : CVE-2026-22200

JSON object : View

Products Affected

enhancesoft

  • osticket
CWE
CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')