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I. Basic Information for CVE-2026-22200
Vulnerability Information

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Vulnerability Title
osTicket (1.18.x < 1.18.3, 1.17.x < 1.17.7) PDF Export Arbitrary File Read
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Enhancesoft osTicket 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Enhancesoft osTicket是美国Enhancesoft公司的一套开源的票务系统。 Enhancesoft osTicket 1.18.2及之前版本存在注入漏洞,该漏洞源于票据PDF导出功能存在任意文件读取,可能导致远程攻击者通过特制富文本HTML泄露服务器文件系统中的敏感本地文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
EnhancesoftosTicket 1.18.0 ~ 1.18.3 -
II. Public POCs for CVE-2026-22200
#POC DescriptionSource LinkShenlong Link
1Enhancesoft 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. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-22200.yamlPOC Details
2CVE-2026-22200: Arbitrary file read + CNEXT RCE in osTickethttps://github.com/horizon3ai/CVE-2026-22200POC Details
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III. Intelligence Information for CVE-2026-22200
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IV. Related Vulnerabilities
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