CVE-2026-43980
Malla: Stored XSS via Meshtastic node names in multiple frontend pages
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.
INFO
Published Date :
Aug. 21, 2026, 10:16 p.m.
Last Modified :
Oct. 12, 2026, 4:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-43980
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update Malla to commit 4086e2b5f61615a813b70b25bc76095083552135.
- Sanitize MQTT input data.
- Escape DOM content before rendering.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-43980.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-43980 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-43980
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-43980 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-43980 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 12, 2026
Action Type Old Value New Value Added Translation Title: malla de zenitraM, Description: Malla es un analizador web para redes Meshtastic basado en datos MQTT. Antes del commit 4086e2b5f61615a813b70b25bc76095083552135, los nombres de código (long_name, short_name) recibidos a través de MQTT se almacenan en SQLite sin sanitización y se renderizan en el DOM sin escape. Cualquier participante en un broker MQTT público de Meshtastic puede establecer un nombre de nodo malicioso que ejecuta JavaScript en el navegador de cada visitante del panel de control de Malla. El commit 4086e2b5f6161615a813b70b25bc76095083552135 soluciona el problema. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 24, 2026
Action Type Old Value New Value Added Reference https://github.com/zenitraM/malla/security/advisories/GHSA-ch57-39q2-4crm Added SSVC {'id': 'CVE-2026-43980', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-24T20:10:26.577504Z'} -
New CVE Received by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'zenitraM', 'product': 'malla', 'versions': [{'status': 'affected', 'version': '< 4086e2b5f61615a813b70b25bc76095083552135'}]}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L Added CWE CWE-79 Added Reference https://github.com/pypa/advisory-database/tree/main/vulns/malla/PYSEC-2026-2618.yaml Added Reference https://github.com/zenitraM/malla/commit/4086e2b5f61615a813b70b25bc76095083552135 Added Reference https://github.com/zenitraM/malla/security/advisories/GHSA-ch57-39q2-4crm