--- title: "CVE-2026-22200: osTicket (1.18.x < 1.18.3, 1.17.x… | CubePath" description: "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…" language: en source: https://cubepath.com/security/cve/CVE-2026-22200 --- # CVE-2026-22200: osTicket (1.18.x < 1.18.3, 1.17.x… | CubePath ## Description 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. Official description from the CVE record, published by VulnCheck. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-22200) ## Key data ### CVSS 4.0 High 8.7 Score published by VulnCheck in the CVE record. 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 | Metric | Value | What it means | | ----------------------------------- | ------- | --------------------------------------------------------------------------------------------------------------- | | Attack vector | Network | The vulnerable component can be reached over a network, possibly from the Internet. | | Attack complexity | Low | No measurable action is needed to get around the system's built-in security controls. The attack is repeatable. | | Attack requirements | None | The attack works without any special deployment or execution conditions. | | Privileges required | None | No account or privileges are needed. | | User interaction | None | No action from any user is needed. | | Vulnerable system: confidentiality | High | Serious or total effect on the secrecy of data. | | Vulnerable system: integrity | None | No effect on the trustworthiness of data. | | Vulnerable system: availability | None | No effect on availability. | | Subsequent systems: confidentiality | None | No effect on other systems' data secrecy. | | Subsequent systems: integrity | None | No effect on other systems' data trustworthiness. | | Subsequent systems: availability | None | No effect on other systems' availability. | CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at [first.org/cvss](https://www.first.org/cvss/) . ### EPSS Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days. Score 0.73589 (73.6% probability) Percentile 99.5% Scores of Nov 10, 2026 Model v2026.06.15 ### CISA assessment as of Jan 12, 2026 Stakeholder-Specific Vulnerability Categorization (SSVC) decision points added by CISA. Automatable yes Technical impact partial ### Weakness (CWE) CWE catalog version 5.0. CWE names: Copyright © 2006-2026, The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CWE license. - [CWE-74](https://cwe.mitre.org/data/definitions/74.html) Improper Neutralization of Special Elements in Output Used by a Downstream Component ## Affected products Products listed in the CVE record, as the CNA published them. - Enhancesoft osTicket - affected: 1.18.0 up to before 1.18.3 - affected: 1.17.0 up to before 1.17.7 ## References Links listed in the CVE record. They lead to other sites, which CubePath does not control. - [osTicket 1.18.3 Release Notes](https://github.com/osTicket/osTicket/releases/tag/v1.18.3) (github.com) release-notes - [osTicket 1.17.7 Release Notes](https://github.com/osTicket/osTicket/releases/tag/v1.17.7) (github.com) release-notes - [github.com/osTicket/osTicket/commit/c59b067](https://github.com/osTicket/osTicket/commit/c59b067) patch - [horizon3.ai/attack-research/attack-blogs/ticket-to-shell-ex…](https://horizon3.ai/attack-research/attack-blogs/ticket-to-shell-exploiting-php-filters-and-cnext-in-osticket-cve-2026-22200/) technical-description exploit - [vulncheck.com/advisories/osticket-pdf-export-arbitrary-file…](https://www.vulncheck.com/advisories/osticket-pdf-export-arbitrary-file-read) third-party-advisory ## Timeline 1. ID reserved Jan 6, 2026 2. Record published Jan 12, 2026 3. Record last updated Nov 8, 2026 ## Look up another CVE ## About CubePath CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection. [Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection) Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:03 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)