CVE-2026-49245
LowCVSS 3.7Exploitation Probability (EPSS)
Low risk10th percentile - higher than 10% of all known CVEs
Summary
SFTPGo from 2.2.0 to 2.7.3, the inline query parameter on file downloads suppresses Content-Disposition: attachment, allowing attacker-controlled HTML files to be served as text/html in the web origin.
Risk Assessment
An attacker can send a crafted link to a victim, and opening it executes stored content in the victim's browser context, potentially leading to data theft or manipulation.
Recommendation
Upgrade to version 2.7.3, which contains the fix.
Other vulnerabilities in SFTPGo
See all- CVE-2026-49244Medium
SFTPGo is an open source, event-driven file transfer solution. From 2.2.0 until 2.7.3, the public web-client partial ZIP download endpoint for a browsable share validates client-supplied files entries with a raw byte-prefix comparison rather than a directory-boundary-aware check. An unauthenticated requester who can reach a public share can select a canonical path outside the shared directory when the target path begins with the shared directory's name, such as a sibling path that shares the same prefix. The endpoint then includes the out-of-scope file in the generated download, disclosing its contents. This issue is fixed in version 2.7.3.
- CVE-2026-10031Medium
SFTPGo prior to 2.7.4 contains a permission bypass vulnerability that allows authenticated users to circumvent per-directory access controls by creating symbolic links in a permitted directory that point to files in directories where download, upload, or overwrite permissions are denied. Attackers can exploit the create_symlinks permission combined with read and write access in one directory to read or modify files in restricted directories, as operations are authorized against the link's directory permissions rather than the dereferenced target's directory permissions.
Original NVD description (English source)
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.