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.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-21 22:16

Updated : 2026-09-09 21:06

NVD link : CVE-2026-43980

Mitre link : CVE-2026-43980

CVE.ORG link : CVE-2026-43980

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"id": "CVE-2026-43980", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"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"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "zenitraM", "product": "malla", "versions": [{"status": "affected", "version": "< 4086e2b5f61615a813b70b25bc76095083552135"}]}]}], "published": "2026-08-21T22:16:37.563", "references": [{"url": "https://github.com/pypa/advisory-database/tree/main/vulns/malla/PYSEC-2026-2618.yaml", "source": "security-advisories@github.com"}, {"url": "https://github.com/zenitraM/malla/commit/4086e2b5f61615a813b70b25bc76095083552135", "source": "security-advisories@github.com"}, {"url": "https://github.com/zenitraM/malla/security/advisories/GHSA-ch57-39q2-4crm", "source": "security-advisories@github.com"}, {"url": "https://github.com/zenitraM/malla/security/advisories/GHSA-ch57-39q2-4crm", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-09-09T21:06:39.057", "sourceIdentifier": "security-advisories@github.com"}