FKIE_CVE-2026-65644
Vulnerability from fkie_nvd - Published: 2026-08-21 04:18 - Updated: 2026-09-04 18:30
Severity
Summary
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.
References
| URL | Tags | ||
|---|---|---|---|
| support@hackerone.com | https://github.com/RocketChat/Rocket.Chat/pull/41595 | Patch, Vendor Advisory | |
| support@hackerone.com | https://hackerone.com/reports/3872858 | Third Party Advisory, Issue Tracking |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | * | |
| rocket.chat | rocket.chat | 8.7.0 |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"product": "Rocket.Chat",
"vendor": "Rocket.Chat",
"versions": [
{
"lessThan": "8.8.0",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.7.1",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.6.2",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.5.3",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.4.6",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.3.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.2.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "8.1.8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "7.10.15",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "support@hackerone.com"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "83AFD920-8EAC-445A-9EDE-39A405C7EFCF",
"versionEndExcluding": "7.10.15",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "F0047835-D014-4735-9D38-AD6E91E69DC2",
"versionEndExcluding": "8.1.8",
"versionStartIncluding": "8.1.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "7BF9BDAA-1A56-43C5-ACFC-4849A21CD601",
"versionEndExcluding": "8.2.8",
"versionStartIncluding": "8.2.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "36B7912B-900A-4B96-BAE2-9CA5834BB25A",
"versionEndExcluding": "8.3.8",
"versionStartIncluding": "8.3.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5314C8E0-FBBB-4DB6-9729-D6A41DEE57AF",
"versionEndExcluding": "8.4.6",
"versionStartIncluding": "8.4.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "4E8FA572-5D43-4253-A81E-F0F4FC3F3189",
"versionEndExcluding": "8.5.3",
"versionStartIncluding": "8.5.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"matchCriteriaId": "773C4B37-A14E-4898-8501-3F89C796CFC1",
"versionEndExcluding": "8.6.2",
"versionStartIncluding": "8.6.0",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:rocket.chat:rocket.chat:8.7.0:*:*:*:*:*:*:*",
"matchCriteriaId": "89603D12-AAF4-4065-BDE9-45EB52E29EE0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"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."
}
],
"id": "CVE-2026-65644",
"lastModified": "2026-09-04T18:30:22.127",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-65644",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-27T19:19:28.284092Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-21T04:18:13.780",
"references": [
{
"source": "support@hackerone.com",
"tags": [
"Patch",
"Vendor Advisory"
],
"url": "https://github.com/RocketChat/Rocket.Chat/pull/41595"
},
{
"source": "support@hackerone.com",
"tags": [
"Third Party Advisory",
"Issue Tracking"
],
"url": "https://hackerone.com/reports/3872858"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Analyzed",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "support@hackerone.com",
"type": "Secondary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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