CVE-2026-45323
CVE-2026-45323 is a critical-severity vulnerability in Jpettitt Meshcore Card with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Critical (CVSS 3.x base score 9.6)
- EPSS exploit prediction: 0% (24th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-32972
- Weakness: CWE-79
- Affected product: Jpettitt Meshcore Card
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2026-45323?
- 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.
- How severe is CVE-2026-45323?
- CVE-2026-45323 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-45323 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-45323?
- CVE-2026-45323 affects Jpettitt Meshcore Card. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-45323?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2026-45323 have an EU (EUVD) identifier?
- Yes. CVE-2026-45323 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-32972.
- When was CVE-2026-45323 published?
- CVE-2026-45323 was published on 2026-05-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:jpettitt:meshcore_card:*:*:*:*:*:home_assistant:*:*
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