@dependencytrack/frontend vulnerable to Persistent Cross-Site-Scripting via welcome message

### Description Since version 4.12.0, Dependency-Track users with the `SYSTEM_CONFIGURATION` permission can configure a "welcome message", which is HTML that is to be rendered on the login page for branding purposes. When rendering the welcome message, Dependency-Track versions before 4.13.6 did not properly sanitize the HTML, allowing arbitrary JavaScript to be executed. ### Impact Users with the `SYSTEM_CONFIGURATION` permission (i.e., administrators), can exploit this weakness to execute arbitrary JavaScript for users browsing to the login page. ### Patches The issue has been fixed in version 4.13.6. ### References * The issue was introduced via: https://github.com/DependencyTrack/frontend/pull/986 * The issue was fixed via: https://github.com/DependencyTrack/frontend/pull/1378 ### Credit Thanks to *Jonas Benjamin Friedli* for identifying and responsibly disclosing the issue.

Source published

17 Nov 2025 18:15:55 UTC

Source modified

17 Nov 2025 18:57:55 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Publisher rating · MODERATE