CVE-2026-45323

Name: CVE-2026-45323
Creator: NVD / NIST
Published: 2026-05-28T18:16:35.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.6/10EPSS 0.32%

Last modified Jun 17, 2026

CVE-2026-45323 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. 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. EPSS estimates a 0.32% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.6/10

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

EPSS Probability

0.32%

23.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Jpettitt	Meshcore Card	< 0.3.3

References

https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppcExploit, Mitigation, Vendor Advisory
https://github.com/jpettitt/meshcore-card/security/advisories/GHSA-5vrg-xpcj-xppcExploit, Mitigation, Vendor Advisory

Timeline

Published: May 28, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-45323?

How severe is CVE-2026-45323?

CVE-2026-45323 has a CVSS score of 9.6/10 (CRITICAL severity). The EPSS model estimates a 0.32% probability of exploitation in the next 30 days.

How do I fix CVE-2026-45323?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-45323?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST