CVE-2021-29438: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in @nextcloud/dialogs
First published: Tue Apr 13 2021(Updated: )
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.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud | <3.1.2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-29438?
The severity of CVE-2021-29438 is considered to be high due to the potential for XSS attacks.
How do I fix CVE-2021-29438?
To fix CVE-2021-29438, update the @nextcloud/dialogs package to version 3.1.2 or later.
What are the potential impacts of CVE-2021-29438?
CVE-2021-29438 can lead to cross-site scripting (XSS) vulnerabilities if user-supplied input is not properly escaped.
Is my application affected by CVE-2021-29438?
Your application may be affected by CVE-2021-29438 if it uses the @nextcloud/dialogs package version below 3.1.2 and displays user-supplied input in toasts.
What is the nature of the vulnerability in CVE-2021-29438?
CVE-2021-29438 is an XSS vulnerability caused by insufficiently escaping user input in toast notifications.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/references
- agent/title
- agent/author
- agent/severity
- agent/last-modified-date
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/nextcloud\/dialogs project
- canonical/nextcloud