CVE-2026-22200

high-risk
Published 2026-01-12

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.

Do I need to act?

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74.4% chance of exploitation in next 30 days
EPSS score — higher than 26% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Enhancesoft

References (5)

Patch https://github.com/osTicket/osTicket/commit/c59b067
Release Notes https://github.com/osTicket/osTicket/releases/tag/v1.17.7
Release Notes https://github.com/osTicket/osTicket/releases/tag/v1.18.3
Exploit https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-...
Third Party Advisory https://www.vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read
50
/ 100
high-risk
Severity 26/34 · High
Exploitability 19/34 · Moderate
Exposure 5/34 · Minimal