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CVE-2026-49245— SFTPGo: Stored XSS via inline parameter on public shares and user file download

Quick assessment

Affected
drakkan sftpgo
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.

drakkan sftpgo是drakkan个人开发者的一款支持SFTP协议的文件传输服务器软件。 drakkan sftpgo 2.2.0版本至2.7.3之前版本存在跨站脚本漏洞，该漏洞源于inline查询参数抑制Content-Disposition attachment响应头，导致攻击者控制的HTML文件在SFTPGo Web源中以text/html形式提供，可能造成在受害者浏览器上下文中执行存储的内容。

CVSS 3.7 · Low EPSS 0.25% · P15

Affected Version Matrix 1

VendorProduct Version RangeStatus
drakkan sftpgo >= 2.2.0 < 2.7.2 affected
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I. Basic Information for CVE-2026-49245

Vulnerability Information
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Vulnerability Title
SFTPGo: Stored XSS via inline parameter on public shares and user file download
Source: CVE Program / CVE List V5
Vulnerability Description
SFTPGo is an open source, event-driven file transfer solution. From 2.2.0 until 2.7.3, the inline query parameter on browsable-share file downloads and authenticated user-file downloads suppresses Content-Disposition: attachment, allowing an attacker-controlled HTML file stored in a share or home directory to be served as text/html in the SFTPGo web origin. An attacker who can place the file can send a crafted link to a victim, and opening that link executes the stored content in the victim's browser context. Exploitation requires social engineering and suitable share or shared-folder access, while HttpOnly session cookies limit direct cookie theft. This issue is fixed in version 2.7.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
drakkan sftpgo 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
drakkan sftpgo是drakkan个人开发者的一款支持SFTP协议的文件传输服务器软件。 drakkan sftpgo 2.2.0版本至2.7.3之前版本存在跨站脚本漏洞，该漏洞源于inline查询参数抑制Content-Disposition attachment响应头，导致攻击者控制的HTML文件在SFTPGo Web源中以text/html形式提供，可能造成在受害者浏览器上下文中执行存储的内容。
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
drakkan sftpgo >= 2.2.0 < 2.7.2 -

II. Public POCs for CVE-2026-49245

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III. Intelligence Information for CVE-2026-49245

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Patches & Fixes for CVE-2026-49245 (1)

Vendor Advisories for CVE-2026-49245 (1)

Vendor Pages for CVE-2026-49245 (1)

IV. Related Vulnerabilities

Same product: sftpgo
Same vendor: drakkan
Same weakness: CWE-79

V. Comments for CVE-2026-49245

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