Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in @nextcloud/dialogs
Impact
The Nextcloud dialogs library before 3.1.2 did insufficiently escape text input passed to a toast. If your application displays toasts with user-supplied input, this could lead to a XSS vulnerability.
Note: Nextcloud Server employs a strict Content Security Policy that mitigates the risk of these XSS vulnerabilities.
Patches
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.
Workarounds
Make sure no user-supplied input flows into toasts.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @nextcloud/dialogs | < 3.1.2 | 3.1.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N- Weakness (CWE)
CWE-79, CWE-80- Platform
- npm
- Package
@nextcloud/dialogs- Disclosed
- 16.04.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-g3fq-3v3g-mh32 - CC BY 4.0
Vulnerability history: @nextcloud/dialogs
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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