CVE-2026-65644
Full vulnerability record from the local CVENow database.
Description
Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8, and 7.10.15 has a REST API endpoint POST /api/v1/livechat/visitor that accepts an unauthenticated, unsanitized name field for Livechat visitors. This name is stored raw and later rendered via dangerouslySetInnerHTML in the Omnichannel Queue side panel (InquireSidePanelItem.tsx), injecting a real, clickable HTML link - pointing to any attacker-controlled domain, with arbitrary social-engineering text - into the DOM of any agent viewing the queue.
Severity
HIGH
CVSS score
7.5
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-08-21 04:18:13.780000
Last modified
2026-10-26 10:10:00.140000
View original CVE JSON
{
"id": "CVE-2026-65644",
"sourceIdentifier": "[email protected]",
"published": "2026-08-21T04:18:13.780",
"lastModified": "2026-10-26T10:10:00.140",
"vulnStatus": "Analyzed",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Rocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8, and 7.10.15 has a REST API endpoint POST /api/v1/livechat/visitor that accepts an unauthenticated, unsanitized name field for Livechat visitors. This name is stored raw and later rendered via dangerouslySetInnerHTML in the Omnichannel Queue side panel (InquireSidePanelItem.tsx), injecting a real, clickable HTML link - pointing to any attacker-controlled domain, with arbitrary social-engineering text - into the DOM of any agent viewing the queue."
},
{
"lang": "es",
"value": "Rocket.Chat en versiones anteriores a la 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6, 8.3.8, 8.2.8, 8.1.8 y 7.10.15 tiene un endpoint de API REST POST /api/v1/livechat/visitor que acepta un campo de nombre no autenticado y no saneado para los visitantes de Livechat. Este nombre se almacena sin procesar y luego se renderiza a través de dangerouslySetInnerHTML en el panel lateral de la Cola Omnicanal (InquireSidePanelItem.tsx), inyectando un enlace HTML real y clicable - que apunta a cualquier dominio controlado por el atacante, con texto arbitrario de ingeniería social - en el DOM de cualquier agente que vea la cola."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Rocket.Chat",
"product": "Rocket.Chat",
"defaultStatus": "unaffected",
"versions": [
{
"version": "0",
"lessThan": "8.8.0",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "8.7.1",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "8.6.2",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "8.5.3",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "8.4.6",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "8.3.8",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "8.2.8",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "8.1.8",
"versionType": "semver",
"status": "affected"
},
{
"version": "0",
"lessThan": "7.10.15",
"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:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-27T19:19:28.284092Z",
"id": "CVE-2026-65644",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-79"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"versionEndExcluding": "7.10.15",
"matchCriteriaId": "83AFD920-8EAC-445A-9EDE-39A405C7EFCF"
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"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"versionStartIncluding": "8.1.0",
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"matchCriteriaId": "7BF9BDAA-1A56-43C5-ACFC-4849A21CD601"
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"versionStartIncluding": "8.3.0",
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"versionStartIncluding": "8.4.0",
"versionEndExcluding": "8.4.6",
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{
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"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"versionStartIncluding": "8.5.0",
"versionEndExcluding": "8.5.3",
"matchCriteriaId": "4E8FA572-5D43-4253-A81E-F0F4FC3F3189"
},
{
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"versionStartIncluding": "8.6.0",
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"matchCriteriaId": "773C4B37-A14E-4898-8501-3F89C796CFC1"
},
{
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],
"references": [
{
"url": "https://github.com/RocketChat/Rocket.Chat/pull/41595",
"source": "[email protected]",
"tags": [
"Patch",
"Vendor Advisory"
]
},
{
"url": "https://hackerone.com/reports/3872858",
"source": "[email protected]",
"tags": [
"Third Party Advisory",
"Issue Tracking"
]
}
]
}