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

Quick assessment

Affected
jpettitt meshcore-card
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MeshCore Card是John Pettitt个人开发者的一款显示MeshCore网格网络统计数据的Home Assistant卡片。 MeshCore Card 0.3.3之前版本存在跨站脚本漏洞，该漏洞源于meshcore节点名称在meshcore-card中未进行HTML转义，任何直接或间接无线电范围内的节点可在查看该卡片的任何人的Home Assistant前端中执行任意JavaScript。

CVSS 9.6 · Critical EPSS 0.32% · P24

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
jpettitt meshcore-card < 0.3.3 affected
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I. Basic Information for CVE-2026-45323

Vulnerability Information
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Vulnerability Title
MeshCore Card: XSS vulnerability through meshcore node name
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
MeshCore Card 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MeshCore Card是John Pettitt个人开发者的一款显示MeshCore网格网络统计数据的Home Assistant卡片。 MeshCore Card 0.3.3之前版本存在跨站脚本漏洞，该漏洞源于meshcore节点名称在meshcore-card中未进行HTML转义，任何直接或间接无线电范围内的节点可在查看该卡片的任何人的Home Assistant前端中执行任意JavaScript。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jpettitt meshcore-card < 0.3.3 -

II. Public POCs for CVE-2026-45323

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8217 chars
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III. Intelligence Information for CVE-2026-45323

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Vendor Advisories for CVE-2026-45323 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-45323

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