CVE-2026-65644

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-65644
StatePUBLISHED
Assignerhackerone
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-21 04:18:13 UTC
Updated2026-09-04 18:30:22 UTC
DescriptionRocket.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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS: 0.002980000 probability, percentile 0.220270000 (date 2026-09-04)

Problem Types: CWE-79 | CWE-79 CWE-79 Cross-site Scripting (XSS) - DOM

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Rocket.chat Rocket.chat All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Rocket.Chat Rocket.Chat affected 8.8.0 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.7.1 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.6.2 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.5.3 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.4.6 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.3.8 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.2.8 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 8.1.8 semver Not specified
CNA Rocket.Chat Rocket.Chat affected 7.10.15 semver Not specified

References

ReferenceSourceLinkTags
github.com/RocketChat/Rocket.Chat/pull/41595 [email protected] github.com Patch, Vendor Advisory
hackerone.com/reports/3872858 [email protected] hackerone.com Third Party Advisory, Issue Tracking
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Hill N (hillng) (en)

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