drakkan/sftpgo · Security
SFTPGo: Denial of service via malformed SSH channel request
- GHSA ID
- GHSA-q7pc-356p-hggc
- CVE ID
- CVE-2026-77375
- Severity
- medium
- Published
- Updated
- CVSS
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
Summary
A flaw in the SSH service allows an authenticated client to crash the server by sending a malformed protocol message while opening a channel.
Impact
Any user able to authenticate over SSH can trigger an unhandled error condition that aborts the server process. This results in a denial of service affecting all connected users until the service is restarted. No confidentiality or integrity impact has been identified; the issue is limited to availability.
CWEs
- CWE-129 · Improper Validation of Array Index
References
- https://github.com/drakkan/sftpgo/security/advisories/GHSA-q7pc-356p-hggc ↗
- https://nvd.nist.gov/vuln/detail/CVE-2026-77375 ↗
- https://github.com/drakkan/sftpgo/commit/4f751232d7025cf2f7360e01ee8dca81e74b48b0 ↗
- https://github.com/drakkan/sftpgo/releases/tag/v2.7.5 ↗
- https://github.com/advisories/GHSA-q7pc-356p-hggc ↗