Vulnerability · Published Oct 13, 2026 · Assigned by GitHub_M
CVE-2026-103028SFTPGo source-side file-pattern filter bypass during copy operations
Medium 4.3
In plain English
A medium-severity incorrect authorization in sftpgo from drakkan. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
SFTPGo is an open source, event-driven file transfer solution. From 2.5.0 until 2.7.6, an authenticated user with copy permission can copy a source file denied by denied_patterns or outside allowed_patterns to an allowed destination name because file-pattern filters are evaluated only on the destination. The user can then read the denied file contents. Recursive directory copies can reproduce restricted contents under an allowed path, and the hide policy is bypassed because files that appear missing to stat and directory listings can still be copied. Home-directory boundaries, virtual-folder layout, per-directory permissions, access to other accounts, and administrative authorization remain enforced. This issue is fixed in 2.7.6.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/drakkan/sftpgo | no fix listed | GO-2026-6802 |
| Go | github.com/drakkan/sftpgo/v2 | 2.7.6 | GHSA-wwv9-g5x4-966q |
| Go | github.com/drakkan/sftpgo/v2 | 2.7.6 | GO-2026-6802 |
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/drakkan/sftpgo/security/advisories/GHSA-wwv9-g5x4-966q x_refsource_CONFIRM
- https://github.com/drakkan/sftpgo/commit/dc8886bc079094b4ac2338df683f358b7676b5eb x_refsource_MISC
- https://github.com/drakkan/sftpgo/releases/tag/v2.7.6 x_refsource_MISC