XSS in Zenitram Malla
CVE-2026-43980
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.
Vulnerability class: XSS (Cross-Site Scripting)
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
Affected products
- Zenitram Malla — versions < 4086e2b5f61615a813b70b25bc76095083552135
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-43980?
- CVE-2026-43980 is a medium-severity vulnerability in Zenitram Malla, classified under Cross-site Scripting. CVSS score: 6.3/10. Published 2026-08-21.
- How severe is CVE-2026-43980?
- Medium severity. CVSS v3 base score is 6.3 out of 10.