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vuln-cve/data/2026/94xxx/CVE-2026-94094.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-94094",
"assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
"state": "PUBLISHED",
"assignerShortName": "VulDB",
"dateReserved": "2026-09-20T09:07:39.802Z",
"datePublished": "2026-09-20T23:00:14.987Z",
"dateUpdated": "2026-09-22T15:41:58.927Z"
},
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"shortName": "VulDB",
"dateUpdated": "2026-09-20T23:00:14.987Z"
},
"title": "OpenClaw Canvas Host Route server.ts createCanvasHostHandler denial of service",
"problemTypes": [
{
"descriptions": [
{
"type": "CWE",
"cweId": "CWE-404",
"lang": "en",
"description": "Denial of Service"
}
]
}
],
"affected": [
{
"vendor": "n/a",
"product": "OpenClaw",
"versions": [
{
"version": "2026.9.0",
"status": "affected"
},
{
"version": "2026.9.1",
"status": "affected"
},
{
"version": "2026.9.2",
"status": "affected"
},
{
"version": "2026.9.3",
"status": "affected"
},
{
"version": "2026.9.4",
"status": "affected"
},
{
"version": "2026.9.5",
"status": "affected"
}
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"cpes": [
"cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*"
],
"modules": [
"Canvas Host Route"
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw has been found in OpenClaw up to 2026.9.5. Affected is the function createCanvasHostHandler of the file extensions/canvas/src/host/server.ts of the component Canvas Host Route. Executing a manipulation can lead to denial of service. The attack can be launched remotely. The exploit has been published and may be used. Fix suggestion's \"streaming/size-limit\" was never shipped - latest 2026.9.5 still buffers the whole file via readFile() (src/canvas/serve.runtime.ts:17,114), unlike the sibling WS path which caps at 64KB. The vendor was contacted early about this disclosure."
}
],
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"timeline": [
{
"time": "2026-09-20T00:00:00.000Z",
"lang": "en",
"value": "Advisory disclosed"
},
{
"time": "2026-09-20T02:00:00.000Z",
"lang": "en",
"value": "VulDB entry created"
},
{
"time": "2026-09-20T11:12:49.000Z",
"lang": "en",
"value": "VulDB entry last update"
}
],
"credits": [
{
"lang": "en",
"value": "pengguogood (VulDB User)",
"type": "reporter"
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{
"lang": "en",
"value": "VulDB CNA Team",
"type": "coordinator"
}
],
"references": [
{
"url": "https://vuldb.com/vuln/408023",
"name": "VDB-408023 | OpenClaw Canvas Host Route server.ts createCanvasHostHandler denial of service",
"tags": [
"vdb-entry",
"technical-description"
]
},
{
"url": "https://vuldb.com/vuln/408023/cti",
"name": "VDB-408023 | CTI Indicators (IOB, IOC, TTP, IOA)",
"tags": [
"signature",
"permissions-required"
]
},
{
"url": "https://vuldb.com/cve/CVE-2026-94094",
"name": "CVE-2026-94094 | CVE Analysis and Report",
"tags": [
"third-party-advisory"
]
},
{
"url": "https://vuldb.com/submit/882009",
"name": "Submit #882009 | OpenClaw openclaw@2026.6.11 Denial of Service",
"tags": [
"third-party-advisory"
]
},
{
"url": "https://github.com/lche511/cve/tree/main/OpenClaw_Canvas_Big_GET_DoS_Report",
"tags": [
"exploit"
]
}
],
"x_generator": [
"VulDB PVTS v202609"
]
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-22T15:30:11.647018Z",
"id": "CVE-2026-94094",
"options": [
{
"Exploitation": "poc"
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{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
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],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
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"dateUpdated": "2026-09-22T15:41:58.927Z"
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}