CVE-2026-103028 json
SFTPGo source-side file-pattern filter bypass during copy operations
published 2026-10-13 26 d ago modified 2026-10-19 20 d ago also GHSA-wwv9-g5x4-966q , GO-2026-6802 , EUVD-2026-98781
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 12%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/drakkan/sftpgo/v2 2.7.6
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 25 d ago
Exploit prediction
0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/drakkan/sftpgo/v2 | >=2.5.0, <2.7.6 |
2.7.6 |
| go | github.com/drakkan/sftpgo | all versions |
no fix listed |
Affected products
- drakkan sftpgo
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/drakkan/sftpgo/commit/dc8886bc079094b4ac2338df683f358b7676b5eb
web, patch
-
github.com
/drakkan/sftpgo/security/advisories/GHSA-wwv9-g5x4-966q
web, advisory
-
github.com
/drakkan/sftpgo/releases/tag/v2.7.6
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-103028
advisory
-
github.com
/drakkan/sftpgo
package
Sources
- CVE List CVE-2026-103028
- GitHub Advisory GHSA-wwv9-g5x4-966q
- NVD CVE-2026-103028
- OSV GO-2026-6802
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.