CVE-2026-45323: MeshCore Card provides MeshCore Lovelace card for Home Assistant

Q: How do I fix CVE-2026-45323?

meshcore card: upgrade to 0.3.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-45323 being exploited?

CVE-2026-45323 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-45323 affect?

CVE-2026-45323 affects meshcore card. Severity is critical (CVSS 9.6). 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 arbitra

Q: How urgent is CVE-2026-45323?

Priority 45/100. Critical severity; Public exploit reference

This month

CRITICAL 9.6UPGRADE

CVE-2026-45323 is a critical-severity flaw (CVSS 9.6) affecting meshcore card. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.6 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-05-28
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: jpettitt

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-28 18:16 UTCPublished CVE record published
2026-10-26 13:10 UTCUpdated Record last modified

jpettitt meshcore card UPGRADE

Affected: < 0.3.3

Fixed in: 0.3.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy meshcore-card || rpm -q meshcore-card || meshcore-card --version

2. UPGRADE to 0.3.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade meshcore-card

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade meshcore-card

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-45323?

meshcore card: upgrade to 0.3.3. Exact commands for each OS are on this page.

Is CVE-2026-45323 being exploited?

CVE-2026-45323 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-45323 affect?

CVE-2026-45323 affects meshcore card. Severity is critical (CVSS 9.6). 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 arbitra

How urgent is CVE-2026-45323?

Priority 45/100. Critical severity; Public exploit reference

Software pages

Home Assistant vulnerabilities

References

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