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TI-2026-33121 Aliases CVE-2026-45323

MeshCore Card: XSS vulnerability through meshcore node name

Priority HIGH 76CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00317 24th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed meshcore-card (jpettitt): 0.3.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
jpettittmeshcore-cardbefore 0.3.30.3.3Patch availableCNA
  • meshcore-card Vendorjpettitt Affected before 0.3.3 Fixed in 0.3.3 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:jpettitt:meshcore_card:*:*:*:*:*:home_assistant:*:*before 0.3.3Vulnerablejpettitt
  • cpe:2.3:a:jpettitt:meshcore_card:*:*:*:*:*:home_assistant:*:* Versions before 0.3.3 Vulnerable ·jpettitt

Remediation

  • Fix · CNA meshcore-card (jpettitt) Fixed in 0.3.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45323

References

Exploit 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences