CVE-2025-66514 - Nextcloud Mail stored HTML injection in subject text

CVE ID : CVE-2025-66514 Published : Dec. 5, 2025, 6:15 p.m. | 47 minutes ago Description : Nextcloud Mail is the mail app for Nextcloud, a self-hosted productivity platform. Prior to 5.5.3, a stored HTML injection in the Mail app's message list allowed an authenticated user to inject HTML into the email subjects. Javascript was correctly blocked by the content security policy of the Nextcloud Server code. Severity: 3.5 | LOW Visit the link for more details, such as CVSS details, affected products, timeline, and more...

Source: Telegram CVE Monitor