SFTPGo: Path confinement bypass in public browsable share partial ZIP download
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| drakkan | sftpgo | >= 2.2.0 < 2.7.2 | — | No fix listed | CNA |
| — | github.com/drakkan/sftpgo/v2 (Go) | 2.2.0 to before 2.7.3 | 2.7.3 | Patch available | GHSA-h64p-8h4r-6gfh |
- sftpgo Vendordrakkan Affected >= 2.2.0 < 2.7.2 Fixed in — No fix listed CNA
- github.com/drakkan/sftpgo/v2 (Go) Vendor— Affected 2.2.0 to before 2.7.3 Fixed in 2.7.3 Patch available GHSA-h64p-8h4r-6gfh
Remediation
- Fix · GHSA-h64p-8h4r-6gfh github.com/drakkan/sftpgo/v2 (Go) Fixed in 2.7.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-49244
- 2026-10-03 Alias added: GHSA-h64p-8h4r-6gfh
References
More drakkan vulnerabilities
- TI-2022-16494 Recovery codes abuse in SFTPGo CVSS 3.1HIGH 8.3
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
- TI-2025-18109 Insufficient sanitization of user provided rsync command in SFTPGo CVSS 3.1HIGH 7.5
- TI-2026-71799 Denial of service in SFTPGo via malformed SSH channel request CVSS 3.1MEDIUM 6.5
- TI-2022-18599 XSS Vulnerabilities in WebClient CVSS 3.1MEDIUM 6.1
- TI-2026-23740 SFTPGo has a Path Traversal and Permission Bypass via Path Normalization Discrepancy CVSS 4.0MEDIUM 5.3
Sources
- CVE-2026-49244 · CVE Program
- CVE-2026-49244 · NVD
- FIRST EPSS
- GHSA-h64p-8h4r-6gfh · GitHub Advisory Database · CC BY 4.0
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