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CVE-2026-22200— osTicket (1.18.x < 1.18.3, 1.17.x < 1.17.7) PDF Export Arbitrary File Read

Quick assessment

Affected
Enhancesoft osTicket
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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。

AI Predicted 6.5 Difficulty: Easy EPSS 73.91% · P99

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 2

VendorProduct Version RangeStatus
Enhancesoft osTicket 1.18.0< 1.18.3 affected
1.17.0< 1.17.7 affected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Enhancesoft osTicket 1.18.0 ~ 1.18.3 -

II. Public POCs for CVE-2026-22200

# POC Description Source Link Shenlong Link
1 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. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-22200.yaml POC Details
2 CVE-2026-22200: Arbitrary file read + CNEXT RCE in osTicket https://github.com/horizon3ai/CVE-2026-22200 POC Details
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III. Intelligence Information for CVE-2026-22200

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Vendor Advisories for CVE-2026-22200 (1)

Security Blog Posts for CVE-2026-22200 (1)

IV. Related Vulnerabilities

Same product: osTicket
Same vendor: Enhancesoft
Same weakness: CWE-74

V. Comments for CVE-2026-22200

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