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CVE-2026-38444

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

osTicket是osTicket公司开源的一款客服工单管理系统。 osTicket 1.18.3版本存在安全漏洞，该漏洞源于邮件From标头显示名称在include/class.mailparse.php文件中未经清理即提取，并原始存储于ost_thread_entry的poster字段，可能导致未经身份验证的攻击者通过向现有工单发送带有恶意载荷的回复邮件，造成存储型跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a n/a n/a affected
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I. Basic Information for CVE-2026-38444

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
osTicket v1.18.3 is vulnerable to Stored Cross-Site Scripting (XSS) via the email From-header display name. The value is extracted without sanitization in include/class.mailparse.php and stored raw in the poster field of ost_thread_entry. When an unauthenticated attacker sends a reply email to an existing ticket from an unregistered address with an XSS payload in the From display name.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
osTicket 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
osTicket是osTicket公司开源的一款客服工单管理系统。 osTicket 1.18.3版本存在安全漏洞，该漏洞源于邮件From标头显示名称在include/class.mailparse.php文件中未经清理即提取，并原始存储于ost_thread_entry的poster字段，可能导致未经身份验证的攻击者通过向现有工单发送带有恶意载荷的回复邮件，造成存储型跨站脚本攻击。
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

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2026-38444

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III. Intelligence Information for CVE-2026-38444

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Patches & Fixes for CVE-2026-38444 (1)

News Coverage for CVE-2026-38444 (1)

Same Patch Batch · n/a · 2026-08-03 · 20 CVEs total

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CVE-2026-38446 osTicket 安全漏洞
CVE-2026-38447 osTicket 安全漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

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