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TI-2021-10151 Aliases CVE-2021-29438GHSA-g3fq-3v3g-mh32

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in @nextcloud/dialogs

Priority LOW 26CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.00703 53rd percentileScored 2026-11-07
Fix Fixed nextcloud-dialogs (nextcloud): 3.1.2@nextcloud/dialogs (npm): 3.1.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
nextcloudnextcloud-dialogsbefore 3.1.23.1.2Patch availableCNA
—@nextcloud/dialogs (npm)before 3.1.23.1.2Patch availableGHSA-g3fq-3v3g-mh32
  • nextcloud-dialogs Vendornextcloud Affected before 3.1.2 Fixed in 3.1.2 Patch available CNA
  • @nextcloud/dialogs (npm) Vendor— Affected before 3.1.2 Fixed in 3.1.2 Patch available GHSA-g3fq-3v3g-mh32

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nextcloud\/dialogs_project:nextcloud\/dialogs:*:*:*:*:*:node.js:*:*before 3.1.2VulnerableNextcloud/dialogs Project
  • cpe:2.3:a:nextcloud\/dialogs_project:nextcloud\/dialogs:*:*:*:*:*:node.js:*:* Versions before 3.1.2 Vulnerable ·Nextcloud/dialogs Project

Remediation

  • Fix · CNA nextcloud-dialogs (nextcloud) Fixed in 3.1.2
  • Fix · GHSA-g3fq-3v3g-mh32 @nextcloud/dialogs (npm) Fixed in 3.1.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-29438
  2. 2026-10-03 Alias added: GHSA-g3fq-3v3g-mh32

References

Advisory 2

Other 2

  • TI-2026-18211 Windmill < 1.615.0 Operator Role Missing Authorization Checks RCE CVSS 4.0HIGH 8.7
  • TI-2023-14838 NextCloud Cookbook's pull-checks.yml workflow is vulnerable to OS Command Injection CVSS 3.1HIGH 8.8
  • TI-2022-08650 Command Injection in Appointment Emails for Nextcloud Calendar CVSS 3.1CRITICAL 9.8
  • TI-2023-20855 Users can delete external storage mount points CVSS 3.1HIGH 7.7
  • TI-2023-11091 Nextcloud download permissions can be changed by resharer CVSS 3.1HIGH 7.5
  • TI-2023-10624 Nextcloud Server vulnerable to SSRF via filter bypass due to lax checking on IPs CVSS 3.1MEDIUM 5.3
See all 401 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences