Dashboard / CVE-2026-65644

CVE-2026-65644

HIGH
MEDIUM Priority: 0.04 BB Relevance: 75/100
Published: 2026-08-21 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: Unchanged
C: High
I: None
A: None

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.

Weakness Classification (1)

Affected Software (8)

VendorProductVersion
rocket.chat rocket.chat < 7.10.15
rocket.chat rocket.chat 8.1.0 – 8.1.8
rocket.chat rocket.chat 8.2.0 – 8.2.8
rocket.chat rocket.chat 8.3.0 – 8.3.8
rocket.chat rocket.chat 8.4.0 – 8.4.6
rocket.chat rocket.chat 8.5.0 – 8.5.3
rocket.chat rocket.chat 8.6.0 – 8.6.2
rocket.chat rocket.chat 8.7.0

References & Advisories (2)

https://hackerone.com/reports/3872858
Third Party Advisory Issue Tracking

Bug Bounty Relevance

75 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.5 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploitation Probability

0.48%
Raw Score 0.004790
Percentile 41.3%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00479
2026-10-28
0.00479

Intelligence Sources

nvd ref →

External Links