CVE-2026-65644Rocket.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 n…
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- hackerone
- NVD analysis
- Analyzed
- Record last updated
- Aug 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Rocket.Chat Rocket.Chat rocket.chat:rocket.chat (from the name) | before 8.8.0; before 8.7.1; before 8.6.2; before 8.5.3; before 8.4.6; before 8.3.8; before 8.2.8; before 8.1.8; and 1 more ranges | CNA record |
rocket.chat rocket.chat rocket.chat:rocket.chat | before 7.10.15; from 8.1.0 before 8.1.8; from 8.2.0 before 8.2.8; from 8.3.0 before 8.3.8; from 8.4.0 before 8.4.6; from 8.5.0 before 8.5.3; from 8.6.0 before 8.6.2; 8.7.0 | NVD |
References
- https://hackerone.com/reports/3872858third-party-advisory, issue-tracking
- https://github.com/RocketChat/Rocket.Chat/pull/41595patch, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.