CVE-2021-29438: Nextcloud/dialogs Project Nextcloud/dialogs

Medium severity, CVSS 5.4. EPSS: 0.7% chance of exploitation in the next 30 days.

The Nextcloud dialogs library (npm package @nextcloud/dialogs) before 3.1.2 insufficiently escaped text input passed to a toast. If your application displays toasts with user-supplied input, this could lead to a XSS vulnerability. The vulnerability has been patched in version 3.1.2 If you need to display HTML in the toast, explicitly pass the `options.isHTML` config flag.

Affected products

• Nextcloud/dialogs Project Nextcloud/dialogs: before 3.1.2 (fixed in 3.1.2)

Published 2021-04-13. Last modified 2026-06-17.