CVE-2026-45323
MeshCore Card: XSS vulnerability through meshcore node name
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.
INFO
Published Date :
May 28, 2026, 6:16 p.m.
Last Modified :
June 3, 2026, 6:34 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE |
Solution
- Update MeshCore Lovelace card to version 0.3.3.
- Ensure Home Assistant frontend is updated.
Public PoC/Exploit Available at Github
CVE-2026-45323 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-45323.
| URL | Resource |
|---|---|
| https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppc | Exploit Mitigation Vendor Advisory |
| https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppc | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-45323 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-45323
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python HTML
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-45323 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-45323 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jun. 03, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:jpettitt:meshcore_card:*:*:*:*:*:home_assistant:*:* versions up to (excluding) 0.3.3 Added Reference Type CISA-ADP: https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppc Types: Exploit, Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppc Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 29, 2026
Action Type Old Value New Value Added Reference https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppc -
New CVE Received by [email protected]
May. 28, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-79 Added Reference https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppc