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vuln-cve/data/2026/86xxx/CVE-2026-86077.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-86077",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-09-04T19:34:03.100Z",
"datePublished": "2026-09-08T21:28:06.303Z",
"dateUpdated": "2026-09-14T12:05:05.655Z"
},
"containers": {
"cna": {
"title": "n8n: Anonymous Approval-Gate Bypass via Reused resumeToken over the Chat WebSocket",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-862",
"lang": "en",
"description": "CWE-862: Missing Authorization",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "LOW",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"subAvailabilityImpact": "NONE",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N",
"version": "4.0"
}
}
],
"references": [
{
"name": "https://github.com/n8n-io/n8n/security/advisories/GHSA-35jj-42hp-8gmq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/n8n-io/n8n/security/advisories/GHSA-35jj-42hp-8gmq"
},
{
"name": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7"
},
{
"name": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2"
}
],
"affected": [
{
"vendor": "n8n-io",
"product": "n8n",
"versions": [
{
"version": "< 2.37.7",
"status": "affected"
},
{
"version": ">= 2.38.0, < 2.38.2",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-09-08T21:28:06.303Z"
},
"descriptions": [
{
"lang": "en",
"value": "n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the /chat WebSocket route accepted a resumeToken and resumed a paused execution without checking that the target node supported chat messages. An anonymous form submitter who received that token could reuse it on the chat route to release a Send-and-Wait, non-chat HITL, or Wait approval gate. The affected authorization logic is packages/cli/src/chat/chat-execution-manager.ts, where canResumeOverChat did not gate the resume target. This issue is fixed in versions 2.37.7 and 2.38.2."
}
],
"source": {
"advisory": "GHSA-35jj-42hp-8gmq",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-09-14T12:04:54.684621Z",
"id": "CVE-2026-86077",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-09-14T12:05:05.655Z"
}
}
]
}
}