GHSA-Q7PC-356P-HGGC
Vulnerability from github – Published: 2026-10-15 20:14 – Updated: 2026-10-15 20:14Summary
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.
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 2.7.4"
},
"package": {
"ecosystem": "Go",
"name": "github.com/drakkan/sftpgo/v2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.7.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-77375"
],
"database_specific": {
"cwe_ids": [
"CWE-129"
],
"github_reviewed": true,
"github_reviewed_at": "2026-10-15T20:14:20Z",
"nvd_published_at": "2026-10-13T15:17:49Z",
"severity": "MODERATE"
},
"details": "### Summary\n\nA flaw in the SSH service allows an authenticated client to crash the server by sending a malformed protocol message while opening a channel.\n\n### Impact\n\nAny 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.",
"id": "GHSA-q7pc-356p-hggc",
"modified": "2026-10-15T20:14:20Z",
"published": "2026-10-15T20:14:20Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/drakkan/sftpgo/security/advisories/GHSA-q7pc-356p-hggc"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77375"
},
{
"type": "WEB",
"url": "https://github.com/drakkan/sftpgo/commit/4f751232d7025cf2f7360e01ee8dca81e74b48b0"
},
{
"type": "PACKAGE",
"url": "https://github.com/drakkan/sftpgo"
},
{
"type": "WEB",
"url": "https://github.com/drakkan/sftpgo/releases/tag/v2.7.5"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "SFTPGo: Denial of service via malformed SSH channel request"
}
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