What’s Vulnerable › Vulnerabilities

CVE-2026-43980: Malla: Stored XSS via Meshtastic node names in multiple frontend pages

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-21 · updated 2026-10-12
• Weakness: CWE-79

Description

Malla is a web analyzer for Meshtastic networks based on MQTT data. Prior to commit 4086e2b5f61615a813b70b25bc76095083552135, code names (long_name, short_name) received via MQTT are stored in SQLite without sanitization and rendered into the DOM without escaping. Any participant on a public Meshtastic MQTT broker can set a malicious node name that executes JavaScript in the browser of every Malla dashboard visitor. Commit 4086e2b5f61615a813b70b25bc76095083552135 fixes the issue.

Affected products

• zenitraM malla: before 4086e2b5f61615a813b70b25bc76095083552135

References

• https://github.com/pypa/advisory-database/tree/main/vulns/malla/PYSEC-2026-2618.yaml
• https://github.com/zenitraM/malla/commit/4086e2b5f61615a813b70b25bc76095083552135
• https://github.com/zenitraM/malla/security/advisories/GHSA-ch57-39q2-4crm
• https://github.com/zenitraM/malla/security/advisories/GHSA-ch57-39q2-4crm

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