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vuln-cve/data/2026/91xxx/CVE-2026-91166.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-91166",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-09-14T21:20:41.196Z",
"datePublished": "2026-09-21T18:53:56.224Z",
"dateUpdated": "2026-09-24T22:32:09.888Z"
},
"containers": {
"cna": {
"title": "Warpgate: Web SSH stores a jump host's key against the target's address, so it validates as the target",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-297",
"lang": "en",
"description": "CWE-297: Improper Validation of Certificate with Host Mismatch",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-923",
"lang": "en",
"description": "CWE-923: Improper Restriction of Communication Channel to Intended Endpoints",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N",
"version": "3.1"
}
}
],
"references": [
{
"name": "https://github.com/warp-tech/warpgate/security/advisories/GHSA-w9jj-vpw3-5r8f",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/warp-tech/warpgate/security/advisories/GHSA-w9jj-vpw3-5r8f"
},
{
"name": "https://github.com/warp-tech/warpgate/commit/fb66ff74f979c22054f4d348cc0d9065cc67e5d3",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/warp-tech/warpgate/commit/fb66ff74f979c22054f4d348cc0d9065cc67e5d3"
},
{
"name": "https://github.com/warp-tech/warpgate/releases/tag/v0.27.6",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/warp-tech/warpgate/releases/tag/v0.27.6"
}
],
"affected": [
{
"vendor": "warp-tech",
"product": "warpgate",
"versions": [
{
"version": ">= 0.25.0, < 0.27.6",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-21T18:53:56.224Z"
},
"descriptions": [
{
"lang": "en",
"value": "Warpgate is an open source SSH, HTTPS and MySQL bastion host for Linux. From 0.25.0 until 0.27.6, the browser SSH path in warpgate-web-ssh/src/manager.rs handles RCEvent::HostKeyUnknown without the presenting hop identity and instead passes ssh_options.host and ssh_options.port for the final target to KnownHosts::trust. In Prompt and AutoAccept modes, a jump host key can therefore be stored for the target address. A machine later presenting the jump host key at the target address can be accepted as the target, allowing interception of user traffic and a newly issued certificate when certificate authentication is used. The native SSH path is unaffected because it tracks each hop separately. This issue is fixed in version 0.27.6."
}
],
"source": {
"advisory": "GHSA-w9jj-vpw3-5r8f",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/warp-tech/warpgate/security/advisories/GHSA-w9jj-vpw3-5r8f",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-24T22:31:49.029825Z",
"id": "CVE-2026-91166",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-24T22:32:09.888Z"
}
}
]
}
}