CVE-2026-86410
Full vulnerability record from the local CVENow database.
Description
A flaw in the curl command line tool's logic makes it only set SSH host verification options when interacting directly using SFTP or SCP, and not as a result of following a redirect.
Severity
HIGH
CVSS score
8.1
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
2499f714-1537-4658-8207-48ae4bb9eae9
Published
2026-10-20 20:17:25.380000
Last modified
2026-10-29 19:17:27.330000
View original CVE JSON
{
"id": "CVE-2026-86410",
"sourceIdentifier": "2499f714-1537-4658-8207-48ae4bb9eae9",
"published": "2026-10-20T20:17:25.380",
"lastModified": "2026-10-29T19:17:27.330",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw in the curl command line tool's logic makes it only set SSH host\nverification options when interacting directly using SFTP or SCP, and not as a\nresult of following a redirect."
}
],
"affected": [
{
"source": "2499f714-1537-4658-8207-48ae4bb9eae9",
"affectedData": [
{
"vendor": "curl",
"product": "curl",
"defaultStatus": "unaffected",
"versions": [
{
"version": "8.22.0",
"lessThanOrEqual": "8.22.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.21.0",
"lessThanOrEqual": "8.21.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.20.0",
"lessThanOrEqual": "8.20.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.19.0",
"lessThanOrEqual": "8.19.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.18.0",
"lessThanOrEqual": "8.18.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.17.0",
"lessThanOrEqual": "8.17.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.16.0",
"lessThanOrEqual": "8.16.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.15.0",
"lessThanOrEqual": "8.15.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.14.1",
"lessThanOrEqual": "8.14.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.14.0",
"lessThanOrEqual": "8.14.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.13.0",
"lessThanOrEqual": "8.13.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.12.1",
"lessThanOrEqual": "8.12.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.12.0",
"lessThanOrEqual": "8.12.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.11.1",
"lessThanOrEqual": "8.11.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.11.0",
"lessThanOrEqual": "8.11.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.10.1",
"lessThanOrEqual": "8.10.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.10.0",
"lessThanOrEqual": "8.10.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.9.1",
"lessThanOrEqual": "8.9.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.9.0",
"lessThanOrEqual": "8.9.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.8.0",
"lessThanOrEqual": "8.8.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.7.1",
"lessThanOrEqual": "8.7.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.7.0",
"lessThanOrEqual": "8.7.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.6.0",
"lessThanOrEqual": "8.6.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.5.0",
"lessThanOrEqual": "8.5.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.4.0",
"lessThanOrEqual": "8.4.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.3.0",
"lessThanOrEqual": "8.3.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.2.1",
"lessThanOrEqual": "8.2.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.2.0",
"lessThanOrEqual": "8.2.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.1.2",
"lessThanOrEqual": "8.1.2",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.1.1",
"lessThanOrEqual": "8.1.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.1.0",
"lessThanOrEqual": "8.1.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.0.1",
"lessThanOrEqual": "8.0.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "8.0.0",
"lessThanOrEqual": "8.0.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.88.1",
"lessThanOrEqual": "7.88.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.88.0",
"lessThanOrEqual": "7.88.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.87.0",
"lessThanOrEqual": "7.87.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.86.0",
"lessThanOrEqual": "7.86.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.85.0",
"lessThanOrEqual": "7.85.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.84.0",
"lessThanOrEqual": "7.84.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.83.1",
"lessThanOrEqual": "7.83.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.83.0",
"lessThanOrEqual": "7.83.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.82.0",
"lessThanOrEqual": "7.82.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "7.81.0",
"lessThanOrEqual": "7.81.0",
"versionType": "semver",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "HIGH",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-10-29T18:35:42.938804Z",
"id": "CVE-2026-86410",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-297"
}
]
}
],
"references": [
{
"url": "https://curl.se/docs/CVE-2026-86410.html",
"source": "2499f714-1537-4658-8207-48ae4bb9eae9"
},
{
"url": "https://curl.se/docs/CVE-2026-86410.json",
"source": "2499f714-1537-4658-8207-48ae4bb9eae9"
},
{
"url": "https://hackerone.com/reports/3973176",
"source": "2499f714-1537-4658-8207-48ae4bb9eae9"
},
{
"url": "https://hackerone.com/reports/3973176",
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
]
}