Vulnerability · Published May 28, 2026 · Assigned by GitHub_M
CVE-2026-45323MeshCore Card: XSS vulnerability through meshcore node name
Critical 9.6
In plain English
A critical-severity cross-site scripting in meshcore-card from jpettitt. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 3.1)9.6Critical
Exploit odds (30 days)0.3%top 75.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jpettitt | meshcore-card | < 0.3.3 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H