CVE-2026-65644

HighCVSS 7.5/10Last modified Sep 4, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published
Aug 21, 2026
Last modified
Sep 4, 2026
NVD status
Analyzed

Related CVEs from 2026

CVE-2026-656454.3Rocket.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, the Meteor DDP methods getThreadsList anCVE-2026-656469.9Improper neutralization of special elements in in Plesk's DNS zone management functionality allows remote authenticated users to disclose arCVE-2026-656478.7Improper symlink resolution before file access in Plesk allows remote authenticated users to execute arbitrary code as root.CVE-2026-65656.4The Style Kits – Advanced Theme Styles for Elementor, Elementor Kits & Elementor Patterns plugin for WordPress is vulnerable to Stored CrossCVE-2026-656504.3Elgg before 7.0.0 does not check image dimensions to prevent denial of service via a large avatar upload.CVE-2026-656518.7temporalio/sqlparser accepts SQL containing deeply nested unary expressions and can return a correspondingly deep abstract syntax tree withoCVE-2026-656528.7github.com/temporalio/tchannel-go did not validate the one-byte checksum-type field in inbound TChannel call frames. A network peer that canCVE-2026-656538.7github.com/temporalio/tchannel-go did not reject TChannel call fragments containing checksum metadata but no length-prefixed argument chunksCVE-2026-656548.7github.com/temporalio/ringpop-go enforces configured LabelOptions limits when an application changes the local node's labels, but affected vCVE-2026-656552.3When OAuth authentication is enabled and browser-facing TLS terminates at a reverse proxy that forwards the callback to Temporal UI Server oCVE-2026-656567.8Improper neutralization of special elements used in a command ('command injection') in Microsoft Office allows an unauthorized attacker to eCVE-2026-656577.8Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.