CVE-2026-45323 CRITICAL

CVE-2026-45323: MeshCore Card: XSS vulnerability through meshcore node name

Vendor Jpettitt
Product meshcore-card
Weakness CWE-79 · XSS
Published May 28, 2026
Last update May 29, 2026
View on NVD All CVEs

CVSS base score

9.6/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

MeshCore Card provides MeshCore Lovelace card for Home Assistant. Prior to 0.3.3, Meshcore node names are rendered without HTML escaping in meshcore-card, allowing any node within direct or indirect (repeated) radio range to execute arbitrary javascript in the Home Assistant frontend of anyone viewing the card. This vulnerability is fixed in 0.3.3.

Key dates

02Disclosure timeline

May 28, 2026 CVE published
May 29, 2026 Record updated