CVE-2026-40541 in Chat Server

Résumé

par MITRE • 28/08/2026

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in extract domain in Synology Chat Server before 2.4.5-22148 allows remote authenticated users, via a UI interaction, to read or write arbitrary files and conduct denial-of-service attacks in DSM.

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• Responsable: Synology
• Réserver: 14/04/2026
• Divulgation: 28/08/2026
• Modérer: accepté
• Entrée: VDB-396519
• CPE: prêt
• CWE: CWE-79 (confirmé)
• CVSS: 9.0 (CNA)
• EPSS: 0.00000
• KEV: non
• Activités: faible
• Secteur: Telecommunication, Education, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-40541
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40541
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-40541/